Chapter 5 Instructor's Guide
剑桥国际英语教程5修订版教师用书

Utilizing the Cambridge International English Course 5 (Revised Edition) Teacher's Book In the ever-evolving landscape of language education, the Cambridge International English Course (CIEC) 5 Revised Edition Teacher's Book stands as a reliable and comprehensive guide for educators seeking to impart English language skills to their students. This comprehensive resource is not just a textbook; it's a toolbox that equips teachers with the necessary strategies and materials to create an engaging, effective, and adaptive learning environment.The Teacher's Book is structured in a way that makes it easy to navigate, with clear lesson plans, objectives, and activities aligned to the Common European Framework of Reference for Languages (CEFR). This alignment ensures that teachers and students are working towards the same goals, whether it's improving speaking, listening, reading, or writing skills.One of the standout features of the CIEC 5 Teacher's Book is its emphasis on real-world applications. The lessons are designed to be relevant and engaging, oftenincorporating real-life scenarios and contemporary topics that resonate with students. This approach not only makes learning more enjoyable but also more meaningful, as students can see how the language they are learning can be applied in real-world situations.Another noteworthy aspect is the focus ondifferentiated instruction. The Teacher's Book provides options and extensions for each lesson, allowing teachers to tailor the content to the needs and abilities of their students. This flexibility is crucial in today's diverse classrooms, where students come from different backgrounds and have varying levels of proficiency in English.The inclusion of a wealth of teaching resources, such as worksheets, activities, and games, further enhances the teacher's ability to create a dynamic and interactive learning environment. These resources are not just limited to the printed pages; they often include digital components that can be easily integrated into modern classrooms, taking advantage of technology to make learning more engaging and accessible.Moreover, the Teacher's Book emphasizes the importanceof assessment and provides guidance on how to effectively evaluate students' progress. With clear criteria and suggestions for formative and summative assessments, teachers can track their students' progress and identify areas where further support is needed.In conclusion, the Cambridge International English Course 5 Revised Edition Teacher's Book is an invaluable resource for any teacher looking to deliver high-quality English language instruction. It provides a solidfoundation in language skills, while also encouraging creativity and critical thinking. With its focus on real-world applications, differentiated instruction, and awealth of teaching resources, this Teacher's Book is amust-have for any educator seeking to enhance theirteaching practice and improve their students' language outcomes.**《剑桥国际英语教程5修订版教师用书》的应用** 在持续变化的语言教育领域中,《剑桥国际英语教程》(CIEC)5修订版教师用书作为一本可靠而全面的指南,为寻求向学生传授英语技能的教育工作者提供了有力的支持。
《财务管理基础第13版》相关章节答案

*Note: Some instructors prefer to cover Chapters 6 and 7 before going into Chapters 3-5. These chapters have been written so that this can be done without any problem.
9 © Pearson Education Limited 2008
Chapter 1: The Role of Financial Management
ቤተ መጻሕፍቲ ባይዱ
ANSWERS TO QUESTIONS
1. With an objective of maximizing shareholder wealth, capital will tend to be allocated to the most productive investment opportunities on a risk-adjusted return basis. Other decisions will also be made to maximize efficiency. If all firms do this, productivity will be heightened and the economy will realize higher real growth. There will be a greater level of overall economic want satisfaction. Presumably people overall will benefit, but this depends in part on the redistribution of income and wealth via taxation and social programs. In other words, the economic pie will grow larger and everybody should be better off if there is no reslicing. With reslicing, it is possible some people will be worse off, but that is the result of a governmental change in redistribution. It is not due to the objective function of corporations. 2. Maximizing earnings is a nonfunctional objective for the following reasons: a. Earnings is a time vector. Unless one time vector of earnings clearly dominates all other time vectors, it is impossible to select the vector that will maximize earnings. b. Each time vector of earning possesses a risk characteristic. Maximizing expected earnings ignores the risk parameter. c. Earnings can be increased by selling stock and buying treasury bills. Earnings will continue to increase since stock does not require out-of-pocket costs. d. The impact of dividend policies is ignored. If all earnings are retained, future earnings are increased. However, stock prices may decrease as a result of adverse reaction to the absence of dividends. Maximizing wealth takes into account earnings, the timing and risk of these earnings, and the dividend policy of the firm. 3. Financial management is concerned with the acquisition, financing, and management of assets with some overall goal in mind. Thus, the function of financial management can be broken down into three major decision areas: the investment, financing, and asset management decisions. 4. Yes, zero accounting profit while the firm establishes market position is consistent with the maximization of wealth objective. Other investments where short-run profits are sacrificed for the long-run also are possible. 5. The goal of the firm gives the financial manager an objective function to maximize. He/she can judge the value (efficiency) of any financial decision by its impact on that goal. Without such a goal, the manager would be "at sea" in that he/she would have no objective criterion to guide his/her actions. 6. The financial manager is involved in the acquisition, financing, and management of assets. These three functional areas are all interrelated (e.g., a decision to acquire an asset necessitates the financing and management of that asset, whereas financing and management costs affect the decision to invest). 7. If managers have sizable stock positions in the company, they will have a greater understanding for the valuation of the company. Moreover, they may have a greater incentive to maximize shareholder wealth than they would in the absence of stock holdings. However, to the extent persons have not only human capital but also most of their financial
国际经济学课后答案第一章

PART I INSTRUCTOR’S MANUALCHAPTER 1THE INTERNATIONAL ECONOMYCHAPTER OVERVIEWThis chapter introduces students to the international economy. The first part of the chapter emphasizes the high degree of economic interdependence that charac terizes today’s economies. Economic interdependence includes international trade and international finance.The chapter also focuses on the United States as an open economy. Data are provided that show U.S. exports as a percent of gross domestic product and the value of U.S. trade with its major trading partners. The chapter notes that many U.S. firms source a portion of the production of their goods in foreign countries.The chapter concludes by discussing the nature of international competitiveness--for firms, industries, and nations. It is noted that exposure to global competition tends to improve the efficiency of firms. Finally, the chapter introduces the potential effects that international trade has on workers.After completing the chapter, students should be able to:∙Define economic interdependence.∙Discuss the importance of international trade for the U.S. economy.∙Examine the factors that make a company American.∙Discuss the nature of competitiveness and how it applies to firms, industries, and nations.∙Identify the advantages and disadvantages of international trade for workers.BRIEF ANSWERS TO STUDY QUESTIONS1. Interdependence among today's economies reflects the historical evolution of the world's economic andpolitical order. Since World War II, Europe and Japan have reindustrialized. What is more, theformation of the European Community and the Organization of Petroleum Exporting Countries, as well as the rise of multinational corporations, has contributed to closer economic and political linkages.2. Proponents of an open trading system maintain that free trade leads to lower prices, the development ofmore efficient production methods, and a greater range of consumption choices. Free trade permitsresources to move from their lowest productivity to their highest productivity. Critics of an open trading system maintain that import competition may displace domestic firms and workers. It is also argued that during periods of national emergency, it is in the best interests of a nation to protect strategic industries.3. For the United States, growing economic interdependence has resulted in exports and imports increasingas a share of national output. Profits of domestic firms and wages of domestic workers are increasingly being affected by foreign competition. Political and economic events play important roles for theoperation of some sectors of the American economy, such as energy and agriculture.4. The volume of international trade is governed by factors including the level of domestic economic activity(e.g., prosperity versus recession) and restrictions imposed by countries on their imports.5. The chapter describes three fallacies of international trade:a. Trade is a zero sum activityb. Imports reduce employment and act as a drag on the economyc. Tariffs and quotas will save jobs and promote a higher level of employment6. International competitiveness refers to the extent to which the goods of a firm or industry can compete inthe marketplace; this competitiveness depends on the relative prices and qualities of products. No nation can be competitive in, and thus be a net exporter of everything. Because a nation’s stock of resources is limited, the ideal is for these resources to be used in their most productive manner. Nations will benefit from specialization and trade by exporting products having a comparative advantage.7. Researchers at the McKinsey Global Institute have found that global competitiveness is a bit like sports.You get better by playing against folks who are better than you. This means companies are exposed to intense global competition tend to be more productive than those who aren’t.8.International trade benefits most workers, especially those in exporting industries. In addition to providingthem jobs and income, it allows them to shop for consumption goods that are cheapest and of the highest quality. However, workers in import-competing industries often feel threatened from competition ofcheap foreign labor.9.Among the challenges confronting the international trading system are maintaining fair standards for laborand promoting environmental quality.10.The threat of international terrorism tends to slow the degree of globalization and also make it becomecostlier. With terrorism, companies must pay more to insure and provide security for overseas staff and property. Heightened border inspections could slow shipments of cargo, forcing companies to stockmore inventory. Tighter immigration policies could reduce the liberal inflows of skilled and blue-collar laborers that permitted companies to expand while keeping wages in check. Moreover, a greaterpreoccupation with political risk has companies greatly narrowing their horizons when making newinvestments.。
Parker Hannifin 熟练培训指南说明书

Introduction ...................................................................................................................................................... E2Training MaterialsTextbooks/Course ComponentsIndustrial Hydraulic Technology ............................................................................................................. E3Hydraulic Maintenance Technology ........................................................................................................ E3Fluid Power Basics................................................................................................................................ E4Hydraulic Component Sizing ................................................................................................................. E4Filtration T echnology .............................................................................................................................. E5Hydraulic Pumps & Controls ................................................................................................................. E5Reference BooksDesign Engineers Handbook ................................................................................................................. E6Design of Electrohydraulic Systems for Industrial Motion Control .......................................................... E6Handbook of Electrohydraulic FormulaeE6An Engineering Analysis of the Pulse Width Modulation ........................................................................ E7Lexicon III ............................................................................................................................................. E7Computer SoftwareVCCM Design Environment ................................................................................................................... E8Video TrainingIndustrial Hydraulic Technology ............................................................................................................. E9Trainer StandsPortable Hydraulic Trainer .................................................................................................................... E10Lab Manuals........................................................................................................................................ E10Training ProgramsIndustrial Hydraulic Technology (IHT) .......................................................................................................... E11Hydraulic Component Sizing (HCS) ............................................................................................................. E11Hydraulic Pumps & Controls (HPC) ............................................................................................................. E12Hydraulic Maintenance Technology (HMT) ................................................................................................... E12Introduction to Electrohydraulics (EHD)....................................................................................................... E13Electrohydraulic Feedback Systems (EFS)................................................................................................. E13Cartridge Valve Systems (CVS) .................................................................................................................. E14Mobile Hydraulic T echnology (MHT) ............................................................................................................ E14ContentsIntroductionW elcome to Parker’s Involvement Training ProgramThe Training Department at Parker Hannifin was established in the early 1970’s and is recognized today as the industry leader in the development and presentation of training materials and programs. The Department’s charter states that the primary focus of activity shall include all phases of technical training for hydraulic and pneumatic industries. The charter also states that this would be non-commercial and involve state-of-the-art methodology.The Parker approach is one of involvement training. In its full scope, involvement training is one of active participation. This participation results in excellent student retention as well as providing a comfortable way of learning.Parker Catalog 0200 details the Training Department’s current offerings. This catalog is presented in two parts: Training Materials and Training Programs.Training MaterialsThe training materials section contains the following mixed media components:T extbooks/Course ComponentsReference BooksComputer SoftwareVideo T apesTrainer StandsMiscellaneousParker offers seven textbook and course combinations designed for both industrial and educational applications. T opics range from Basic Fluid Power to the specifics of Hydraulic and Pneumatic T echnology.All materials needed for a completeclassroom curriculum are available.T extbooks can be purchasedseparately or in combination with anynumber of additional coursecomponents including workbooks,instructor guide, multiple choiceexams, answer book, coursecertificates and, where appropriate,acetate transparencies and relevantreference books.Parker currently has six referencebooks available. Led by the DesignEngineer’s Handbook, all of thebooks are valuable tools for anyDesign Reference Library, whetherfor individual use or as anaccompaniment to the courses.Additionally, course subject mattercan be further enhanced with relatedcomputer software, video tapes andtrainer stands.Parker’s computer-aided softwarerepresents a strong commitment toadvanced training technology. TheBasic Pneumatic Training CD,featuring animation and video, is theleading pneumatic software in theindustrial market place.The video tape library contains fourcomplete modules for self-pacedone-on-one or group learningactivities. Both hydraulic andpneumatic training programs areavailable.Parker’s portable and full sizehydraulic, pneumatic, and pick-n-place trainer stands provide studentswith valuable hands-on experience.All training stands feature industrialgrade components and provide “RealWorld” applications of principles andcircuitry.Training ProgramsIn addition to training materials,Parker offers an on-going scheduleof classroom educational programs.The current list of classes includesten 3-5 day programs. Each class isled by a Parker certified instructor(s).Students are provided all necessarymaterials to attain course certification.Classes are held in strategiclocations across North America.See Catalog 0200 for a complete listof scheduled class locations.Course fees cover all class roomexpenses. Meals, transportationand lodging are not included.However, Parker will be glad to assistyou with lodging arrangements.Education and training arecontinuous processes. Parker’sInvolvement Training Program hasdoubled its offerings in the last threeyears alone. For the latestinformation on Training Materials orPrograms, please contact:Parker Hannifin CorporationTraining Department6035 Parkland Blvd.Cleveland, OH 44124-4141T el:(216) 896-2577Fax:(216) 514-6738E-mail:*****************.comThe following section gives abrief overview of the trainingmaterials and classes with ahydraulic or electrohydraulicemphasis.INDUSTRIAL HYDRAULIC TECHNOLOGY Industrial Hydraulic Technology2nd Edition, Bulletin 0232-B1ISBN 1-55769-025-1The Industrial Hydraulic Technology textbook is designed to introduce a student to hydraulics as it relates to industrial machinery. The 330-page text is organized into fifteen chapters which include:The Physical World of a MachineHydraulic Transmission of Force and Energy Petroleum Base Hydraulic Fluid Fire Resistant Hydraulic FluidOperation at the Suction Side of a Pump Hydraulic ActuatorsControl of Hydraulic EnergyCheck Valves, Accumulators and Cylinders Flow Control ValvesDirectional Control Valves Pressure Control ValvesPilot Operated Pressure Control Valves Hydraulic Pumps Hydraulic MotorsReservoirs, Coolers and Filters• Circuit illustrations are in six-color to aid the student in visualizing what is happening in a circuit.• Each chapter incorporates an exercise reviewing the lesson’s main points.HYDRAULIC MAINTENANCE TECHNOLOGYHydraulic Maintenance TechnologyBulletin 0240-B1ISBN 1-55769-019-7The Hydraulic Maintenance Technology textbook provides detailed maintenance and troubleshooting information for the user of industrial hydraulicequipment. The 148-page text contains ten chapters which include:Hydraulic Maintenance Introduction Hydraulic Graphic Symbology Power Unit Maintenance Pump MaintenancePressure Control Valve Maintenance Directional Control Valve MaintenanceFlow Control Valve and Check Valve Maintenance Cylinders, Motors and Accumulator Maintenance Leakage Elimination in Hydraulic Systems Fluids and Filter Maintenance• Contains troubleshooting charts with lists of common problems, causes and possible remedies.• This text is also a valuable reference for designers of industrial hydraulic equipmentHYDRAULIC COMPONENT SIZINGHydraulic Component SizingBulletin 0243-B1ISBN 1-55769-036-1The Hydraulic Component Sizing textbook provides an in-depth practical study of pumps, flow valves, pressure valves, directional valves, hydraulic motors, cylinders and accumulators and how total system performance is related to individual component characteristics. Filtration and overall heat generation is covered. The 244-page text is organized into eleven chapters which include:The Hydraulic System Cylinders and Motor The Electric MotorSources of Power - Pumps and Accumulators Check Valves and Directional Control Valves Unloading and Pressure Reducing Valves Reliefs, Counter Balances and Brake Valves Flow ControlsConditioning Systems - Reservoirs and Heat Exchangers Conditioning (Filters)Fluid Conductors• The text also includes a section of 17 assignments in the back of the book.FLUID POWER BASICSFluid Power BasicsBulletin 0239-B1ISBN 1-55769-029-4The Fluid Power Basics textbook is designed tointroduce students to hydraulics and pneumatics as it relates to industrial machinery. The 174-page text is organized into fifteen chapters which include:The Physical World of a Machine Force Transmission Through a FluidEnergy Transmission Using a Hydraulic System Control of Hydraulic EnergyEnergy Transmission Using a Pneumatic System Control of Pneumatic EnergyHydraulic Pumps and Compressors Check Valves, Cylinders and Motors Flow Control ValvesDirectional Control ValvesSimple Pressure Control ValvesPilot Operated Pressure Control Valves Hydraulic Fluid Conditioning Air PreparationFluid Conductors and Connectors• Each chapter incorporates an exercise reviewing the lesson’s main points.FILTRATION TECHNOLOGY Filtration TechnologyBulletin 0247-B1 (Softcover)ISBN 1-55769-037-5Bulletin 0250-B1 (Hardcover, Not Shown)ISBN 1-55769-033-2Filtration Technology is a must as a fundamental introduction to industrial filtration. The text covers topics such as fluids, contaminants, media selection and more. It is helpful to all personnel concerned with OSHA, safety and quality issues. This over 250-page text is organized into fourteen chapters which include:Introduction to Industrial Filtration Technology Fluids and Contaminants Contamination Dynamics Fluid and Filter AnalysisMultipass Filter and Media Selection Lubricant and Hydraulic FluidSpecifying Hydraulic and Lubricating Fluid Filters Water Absorption in Hydraulic and Lubricating Oils Filter and Media Selection for Single-pass Systems Fuel Filter/Water Separators Process Filtration SystemsCompressed Air and Gas Filtration Coolant FiltrationInstallation, Operation and MaintenanceHYDRAULIC PUMPS & CONTROLSHydraulic Pumps & ControlsBulletin 0238-B1ISBN 1-55769-031-6Hydraulic Pumps and Controls is a comprehensive text covering relevant pump topics from basic pump construction and operation to multiple controls,horsepower control and electronic pump controls. The book also contains sections on filtration andtroubleshooting. This 185-page, multi-colored text is organized into nine chapters which include:Pressure CompensationLoad Sensing Theory of Operation Input Power and Inlet Conditions Electrohydraulic Pump Control TroubleshootingRemote CompensationHorsepower (Torque) Limiting Control Hydraulic Filtration Energy ConservationDesign Engineers HandbookBulletin 0224-B1ISBN 1-55769-018-9Design of Electrohydraulic Systems for Industrial Motion Control, 2nd EditionBulletin 0246-B1ISBN 1-55769-032-4A hardcover 400-page text that covers all technical areas relative to motion control utilizing electrohydraulics.Technicians and designers, as well as mechanical,electrical and control engineers will find the text to be a useful tool. The text is also valuable for professors and students of motion control technology, because it provides the most current information available on this technology from a recognized expert.To satisfy the demand for a simple and practical treatment of hydraulics and pneumatics, including components and system connectors, Parker Hannifin Corporation has published a one volume, 320-page text entitled Design Engineers Handbook . The information contained in this text is organized to assist themachine designer and manufacturer, as well as service and maintenance personnel. It should prove to be equally valuable to the college and vocational school student preparing to enter any of these fields.• Each section includes design data, reference material, charts and diagrams.Handbook of Electrohydraulic Formulae, 2nd EditionBulletin 0242-B1ISBN 1-55769-034-0This handbook, written for technicians, engineers and designers, contains 25 chapters of commonly used formulas for the design of electrohydraulic motion control systems. All of the necessary information is centralized, making the design of electrohydraulic motion control systems easier. There is no other text available that offers this accessibility or breadth and depth of information.Lexicon IIIBulletin 0245An Engineering Analysis of the Pulse Width ModulationBulletin 0244This research report contains over 100 pages of detailed engineering information and data regarding the design and evaluation of the pulse width modulation (PWM)method of controlling hydraulic pump outlet pressure.PWM offers a very efficient way for making regulated pressure power units using fixed displacement pumps instead of the more expensive, conventional pressure compensated pumps.The report contains scores of graphical responses,representing hundreds of hours of labs and dataanalysis time. Concise Conclusions sections help the reader to quickly summarize the results and apply them immediately. A complete section is dedicated to Design Methodology so that users can learn the details needed to properly design and construct the power units.Also included is a background on motion control and constant pressure. In addition, authors discuss equipment and principles of operation as well as the method of investigation used.An Engineering Analysis of the Pulse Width Modulation is a must for anyone who uses, specifies, designs or builds hydraulic power units!The Lexicon III is a detailed bulletin of electrohydraulic terms and analogies. The book is laid out into two easy-to-use sections – a glossary of terms and a section on understanding electrohydraulic analogies. Many of the areas are represented by graphs and diagrams to further identify in detail the terms and analogies of electrohydraulics.The author conveniently includes a chart of the SI prefixes, the Handy Conversions Factors T able and a listing of the Greek Letters. This bulletin is a must-have for engineers, students and anyone interested in electrohydraulics.Training MaterialsComputer SoftwareVCCM Design EnvironmentBulletin 0298-P1The manual design of proportional and servo controlled systems requires many hours of computational work as well as much trial and error. Now, with the easy-to-use VCCM software, your can design state-of-the-art motion control systems at the cutting edge of technology!Simply tell VCCM the requirements of your job, and it will tell you the components you need for your design.All data passes through several menu driven screens which may carry explanations that are written in electrohydraulic engineering terms. VCCM does the number crunching for you, leaving you free toconcentrate on the more subjective and critical aspects of the design application. Anyone who has to size and select servo and/or proportional valves will benefit from the VCCM program.Requirements:• 386 CPU with DOS• 2 MB of Space on Hard Drive • SVGA monitor • Windows optionalIndustrial Hydraulic TechnologyBulletin 0299-T1The Industrial Hydraulic Technology course material is available utilizing an audiovisual tape training method.With all the training information stored on cassettetapes, the training sessions can be repeated as often as necessary, allowing each student to acquire the technical knowledge at his or her own pace.The various tapes focus on enabling the user to interpret and read schematics, obtain a working knowledge of components that make up hydraulic systems andadvance to trouble shooting techniques. (Refer to page 4 to see specific chapters covered).• Video tapes are available in Beta, VHS or PAL.• Individual chapters are also available.Includes:14 Video T apes 1 T extbook1 Instructor’s GuideTraining MaterialsVideo TrainingBulletin 0249EHD SupplementBulletin 0231Also available in Spanish!Bulletin 0229-B9 In order to aid the student in understanding hydrauliccomponents and systems operation, Parker hasdeveloped this comprehensive lab manual for the ModelHTV-00 Portable Hydraulic Trainer Stand. This manualcontains circuit problems and demonstrations designedfor use with the Parker trainer. These exercises areintended to supplement text material covered in theclassroom. References are made in this manual toParker textbook, Industrial Hydraulic T echnology (pageL3).Contains exercises using theElectrohydraulic Option Kit(P/N 875279) on the ParkerPortable Hydraulic TrainerStand.Portable Hydraulic TrainerBased on Parker’s long term experience indesigning, manufacturing and servicing fluidpowercomponents worldwide, the Portable HydraulicTrainer is designed to be a tool for learning hydraulictechnology principles and circuitry. It has beenengineered for ruggedness, portability and ease ofoperation. The unit is completely self-containedand operates on standard 115 Volt AC single phaseoutlet electrical power.The components on the trainer are all industrialgrade components used in industry every day. This“real world” approach allows the student to learnwhat those components look like as well as howthey operate.All necessary connections are made with hosesand quick disconnects. No tools are required toarrange circuits. Simply plug in the componentsneeded to arrange a circuit. In addition, all thehoses are stored are stored in a rack to avoidmisplacing “loose” components.For detailed information, request Bulletin 0203Training MaterialsTrainer Stands and Lab ManualsAlso available with the following options:• Electrohydraulic option provides an introduction toboth open loop and closed loop electrohydraulicsystems.• Pneumatic option transforms the hydraulic trainerinto a complete fluidpower training stand.。
高级微观经济学:选择与竞争性市场课后习题答案教师版英文版

1. It introduces monotonicity and convexity properties of preferences, and connects these properties and continuity of preferences to utility representations.
For students who want to see the proof without the extraneous assumption, all the details are supplied between Problem 2.14 and its solution in the Student’s Guide.
In a couple of places, the chapter can bog down (taking stuቤተ መጻሕፍቲ ባይዱents down with it). First, there is the proof of Debreu’s theorem. I have chosen to present the relatively simple and intuitive proof that uses the extraneous assumption that preferences are
Microeconomic Foundations, I: Choice and Competitive Markets
Instructor’s Manual
Chapter 2: Structural Properties of Preferences and Utility Functions
曼昆_经济学原理答案_英文版chp5

Chapter 5Elasticity and its applicationSolutions to text problemsprice elasticity of demand. Explain the relationship between total QZ Definerevenue and the price elasticity of demand. (page 92)The price elasticity of demand is a measure of how much the quantity demanded of a good responds to a change in the price of that good, calculated as the percentage change in quantity demanded divided by the percentage change in price.The relationship between total revenue and the price elasticity of demand is: (1) when a demand curve is inelastic (a price elasticity less than 1), a price increase raises total revenue, and a price decrease reduces total revenue; (2) when a demand curve is elastic (a price elasticity greater than 1), a price increase reduces total revenue, and a price decrease raises total revenue; and (3) when a demand curve is unit elastic (a price elasticity equal to 1), a change in price does not affect total revenue.price elasticity of supply. Explain why the price elasticity of supply QZ Definemight be different in the long run than in the short run. (page 94)The price elasticity of supply is a measure of how much the quantity supplied of a good responds to a change in the price of that good, calculated as the percentage change in quantity supplied divided by the percentage change in price.The price elasticity of supply might be different in the long run than in the short run because over short periods of time, firms cannot easily change the size of their factories to make more or less of a good. Thus, in the short run, the quantity supplied is not very responsive to the price. However, over longer periods, firms can build new factories or close old ones, or they can enter or exit a market. So, in the long run, the quantity supplied can respond substantially to the price.QZ How might a drought that destroys half of all farm crops be good for farmers? If such a drought is good for farmers, why don’t farmers destroy their own crops in the absence of a drought? (page 100)A drought that destroys half of all farm crops could be good for farmers if the demand for the crops is inelastic. The shift to the left of the supply curve leads to a price increase that raises total revenue because the price elasticity is less than one.Even though a drought could be good for farmers, they wouldn’t destroy their crops in the absence of a drought because no one farmer would have an incentive to destroy her crops, since she takes the market price as given. Only if all farmers destroyed their crops together, for example through a government program, would this plan work to make farmers better off.Questions for review (page 101)1The price elasticity of demand measures how much the quantity demanded responds to a change in price. The income elasticity of demand measures how much the quantity demanded changes as consumer income changes.2The determinants of the price elasticity of demand include whether the good is a necessity or a luxury, how available close substitutes are, how broadly defined the market is, and the time horizon.Luxury goods have greater price elasticity than necessities, goods with close substitutes have greater elasticity, goods in more narrowly defined markets have greater elasticity, and goods have greater elasticity the longer the time horizon.3Elasticity greater than 1 means demand is elastic. When the elasticity is greater than 1, the percentage change in quantity demanded exceeds the percentage change in price. When the elasticity60 Principles of Economics, Third edition, Instructor’s Manualequals 0, demand is perfectly inelastic. There is no change in quantity demanded when there is a change in price.4Figure 5.1 presents a supply-and-demand diagram, showing equilibrium price, equilibrium quantity, total spending by consumers and the total revenue received by producers. Total spending byconsumers equals the equilibrium price times the equilibrium quantity. Total revenue received by producers also equals the equilibrium price times the equilibrium quantity. These are shown by the area of the rectangle in Figure 5.1.Figure 5.15If demand is elastic, an increase in price reduces total revenue. With elastic demand, the quantity demanded falls by a greater percentage than the percentage increase in price. As a result, total revenue declines.6 A good with an income elasticity less than 0 is called an inferior good because as income rises, thequantity demanded declines.Chapter 5: Elasticity and its application 61 7The price elasticity of supply is calculated as the percentage change in quantity supplied divided by percentage change in price.Price elasticity of supply =% change in quantity supplied % change in priceIt measures how much the quantity supplied responds to changes in the price.8The price elasticity of supply of Picasso paintings is zero, since no matter how high price rises, no more can ever be produced.9The price elasticity of supply is usually larger in the long run than it is in the short run. Over short periods of time, firms cannot easily change the size of their factories to make more or less of a good, so the quantity supplied is not very responsive to price. Over longer periods, firms can build new factories or close old ones, so the quantity supplied is more responsive to price.10OPEC was unable to maintain a high price through the 1980s because the elasticity of supply and demand were more elastic in the long run. When the price of oil rose, producers of oil outside of OPEC increased oil exploration and built new extraction capacity. Consumers responded withgreater conservation efforts. As a result, supply increased and demand fell, leading to a lower price for oil in the long run.Problems and applications (page 102)1 a Mystery novels have more elastic demand than required textbooks, because mystery novels haveclose substitutes and are more of a luxury good, while required textbooks are more of a necessity with no close substitutes. If the price of mystery novels were to rise, readers could substituteother types of novels, or buy fewer novels altogether. But if the price of required textbooks were to rise, students would have little choice but to pay the higher price. Thus the quantity demanded of required textbooks is less responsive to price than the quantity demanded of mystery novels.b Beethoven recordings have more elastic demand than classical music recordings in general.Beethoven recordings are a narrower market than classical music recordings, so it is easy to find close substitutes for them. If the price of Beethoven recordings were to rise, people couldsubstitute other classical recordings, like Mozart. But if the price of all classical recordings were to rise, substitution would be more difficult. A transition from classical music to hip-hop, forexample, is less likely. Thus the quantity demanded of classical recordings is less responsive to price than the quantity demanded of Beethoven recordings.c Heating oil during the next 5 years has more elastic demand than heating oil during the next 6months. Goods have a more elastic demand over longer time horizons. If the price of heating oil were to rise temporarily, consumers couldn’t switch to other sources of fuel without greatexpense. But if the price of heating oil were to be high for a long time, people would gradually switch to gas or electric heat. As a result, the quantity demanded of heating oil during the next 6 months is less responsive to price than the quantity demanded of heating oil during the next 5years.d Lemonade has more elastic demand than water. Lemonade is a luxury with close substitutes,while water is a necessity with no close substitutes. If the price of water were to rise, consumers have little choice but to pay the higher price. But if the price of lemonade were to rise,consumers could easily switch to other soft drinks. So the quantity demanded of lemonade ismore responsive to price than the quantity demanded of water.2 a(i) For business travellers, the price elasticity of demand when the price of tickets risesfrom $200 to $250 is [(2,000 – 1,900)/1,950]/[(250 – 200)/225] = 3/13 = 0.23.(ii) For holiday-makers, the price elasticity of demand when the price of tickets risesfrom $200 to $250 is [(800 – 600)/700] / [(250 – 200)/225] = 9/7 = 1.29.b The price elasticity of demand for holiday-makers is higher than the elasticity for businesstravellers because holiday-makers can more easily choose a different mode of transportation like driving or taking the train. Business travellers are less likely to do so since time is moreimportant to them and their schedules are less adaptable.62 Principles of Economics, Third edition, Instructor’s Manual3 a(i) If your income is $10,000, your price elasticity of demand as the price of compactdiscs rises from $8 to $10 is [(40 – 32)/36] / [(10 – 8)/9] = 1(ii) If your income is $12,000, the elasticity is [(50 – 45)/47.5] / [(10 – 8)/9] = 9/19 =0.47b(i) If the price is $12, your income elasticity of demand as your income increases from $10,000 to $12,000 is [(30 – 24)/27] / [(12,000 – 10,000)/11,000] = 11/9 = 1.22.(ii) If the price is $16, your income elasticity of demand as your income increases from $10,000 to $12,000 is [(12 – 8)/10] / [(12,000 – 10,000)/11,000] = 11/5 = 2.2.4 a If Emily always spends one-third of her income on clothing, then her income elasticityof demand is one, since maintaining her clothing expenditures as a constant fraction ofher income means the percentage change in her quantity of clothing must equal herpercentage change in income. For example, suppose the price of clothing is $30, herincome is $9,000, and she purchases 100 clothing items. If her income rose 10 percentto $9,900, she’d spend a total of $3,300 on clothing, which is 110 clothing items, a 10percent increase.b Emily’s price elasticity of clothing demand is also one, since every percentage point increase inthe price of clothing would lead her to reduce her quantity purchased by the same percentage.Again, suppose the price of clothing is $30, her income is $9,000, and she purchases 100clothing items. If the price of clothing rose 1 percent to $30.30, she would purchase 99 clothing items, a 1 percent reduction. Note this part of the problem can be confusing to students if theyhave an example with a larger percentage change and they use the point elasticity calculationmethod. This example can be used to further illustrate the usefulness of the midpoint method for any size change.c Since Emily spends a smaller proportion of her income on clothing, then for any given price, herquantity demanded will be lower. Thus her demand curve has shifted to the left. But becauseshe’ll again spend a constant fraction of her income on clothing, her income and price elasticities of demand remain one.5 a With a 4.3 percent decline in quantity following a 20 percent increase in price, theprice elasticity of demand is only 4.3/20 = 0.215, which is fairly inelastic.b With inelastic demand, the revenue rises when the fare rises.c The elasticity estimate might be unreliable because it’s only the first month after the fareincrease. As time goes by, people may switch to other means of transportation in response to the price increase. So the elasticity may be larger in the long run than it is in the short run.6Tom’s price elasticity of demand is zero, since he wants the same quantity regardless of the price.Jerry’s price elasticity of demand is one, since he spends the same amount on gas, no matter what the price, which means his percentage change in quantity is equal to the percentage change in price.7To explain the observation that spending on restaurant meals declines more during economic downturns than does spending on food to be eaten at home, economists look at the income elasticity of demand. In economic downturns, people have lower income. To explain the observation, the income elasticity of restaurant meals must be larger than the income elasticity of spending on food to be eaten at home.8 a With a price elasticity of demand of 0.4, reducing the quantity demanded of cigarettes by 20percent requires a 50 percent increase in price, since 20/50 = 0.4. With the price of a pack ofcigarettes currently at $8, this would require an increase in the price to $13.33 a pack using the midpoint method (note that ($13.33 – $8)/$10.67 = 0.50).b The policy will have a larger effect five years from now than it does one year from now. Theelasticity is larger in the long run, since it may take some time for people to reduce theircigarette usage. The habit of smoking is hard to break in the short run.c Since teenagers don’t have as much income as adults, they are likely to have a higher priceelasticity of demand.9You’d expect the price elasticity of demand to be higher in the market for vanilla ice cream than for all ice cream because vanilla ice cream is a narrower category and other flavours of ice cream are almost perfect substitutes for vanilla.Chapter 5: Elasticity and its application 63 You’d expect the price elasticity of supply to be larger for vanilla ice cream than for all ice cream. A producer of vanilla ice cream could easily adjust the quantity of vanilla ice cream and produce other types of ice cream. But a producer of ice cream would have a more difficult time adjusting the overall quantity of ice cream they produced.10 a As Figure 5.2 shows, in both markets, the increase in supply reduces the equilibrium price andincreases the equilibrium quantity.b In the market for pharmaceutical drugs, with inelastic demand, the increase in supply leads to arelatively large decline in the price and not much of an increase in quantity. This marketexperiences a larger change in price.Figure 5.2c In the market for computers, with elastic demand, the increase in supply leads to a relativelylarge increase in quantity and not much of a decline in price. This market experiences a largerchange in quantity.d In the market for pharmaceutical drugs, since demand is inelastic, the percentage increase inquantity will be less than the percentage decrease in price, so total consumer spending willdecline. In contrast, since demand is elastic in the market for computers, the percentage increase in quantity will be greater than the percentage decrease in price, so total consumer spending will increase.11 a As Figure 5.3 shows, in both markets, the increase in demand increases both the equilibriumprice and the equilibrium quantity.b In the market for beachfront resorts, with inelastic supply, the increase in demand leads to arelatively large increase in the price and not much of an increase in quantity. This marketexperiences a larger change in price.c In the market for cars, with elastic supply, the increase in demand leads to a relatively largeincrease in quantity and not much of an increase in price. This market experiences a largerchange in quantity.d In both markets, total consumer spending rises, since both equilibrium price and equilibriumquantity rise.64 Principles of Economics, Third edition, Instructor’s Manual Figure 5.3Quantity of cars 12 a Vineyard owners whose vines weren’t destroyed benefited because the destruction of some ofthe vines reduced the supply, causing the equilibrium price to rise.b To tell whether vineyard owners as a group were hurt or helped by the floods, you’d need toknow the price elasticity of demand. It could be that the additional income earned by vineyard owners whose vines weren’t destroyed rose more because of the higher prices than the lossesmade by vineyard owners whose vines were destroyed, if demand is inelastic.13 A worldwide drought could increase the total revenue of farmers if the price elasticity of demand forgrain is inelastic. The drought reduces the supply of grain, but if demand is inelastic, the reduction of supply causes a large increase in price. Total farm revenue would rise as a result. If there’s only a drought in Queensland, Queensland’s production isn’t a large enough proportion of the total farm product to have much impact on the price. As a result, price is basically unchanged, while the output of Queensland farmers declines, thus reducing their income.14 When productivity increases for all farmland at a point in time, the increased productivity leads to arise in farmland prices, since more output can be produced on a given amount of land. But prior to the technological improvements, the productivity of farmland depended mainly on the prevailing weather conditions. There was little opportunity to substitute land with worse weather conditions for land with better weather conditions. As technology improved over time, it became much easier to substitute one type of land for another. So the price elasticity of supply for farmland increased over time, since now land with bad weather is a better substitute for land with good weather. Theincreased supply of land reduced farmland prices. As a result, productivity and farmland prices are negatively related over time.15 Not necessarily. If demand for luxury cars is price elastic, then raising the price of luxury cars byincreasing the tax will decrease the total revenue from luxury cars. It is likely that demand for luxury cars is elastic as they are more of a luxury than a necessity. P r i c e o f c a r s。
《财务管理基础第13版》相关章节答案

. © Pearson Education Limited 2008
Chapter 1: The Role of Financial Management
ANSWERS TO QUESTIONS
1. With an objective of maximizing shareholder wealth, capital will tend to be allocated to the most productive investment opportunities on a risk-adjusted return basis. Other decisions will also be made to maximize efficiency. If all firms do this, productivity will be heightened and the economy will realize higher real growth. There will be a greater level of overall economic want satisfaction. Presumably people overall will benefit, but this depends in part on the redistribution of income and wealth via taxation and social programs. In other words, the economic pie will grow larger and everybody should be better off if there is no reslicing. With reslicing, it is possible some people will be worse off, but that is the result of a governmental change in redistribution. It is not due to the objective function of corporations.
博弈论 战略分析入门第一章课后题答案

Instructor’s Guide to Game Theory: A Nontechnical Introduction to theAnalysis of StrategyChapter 1. Conflict, Strategy, and Games1.Objectives and ConceptsThe major objective of this chapter is to introduce the student to the idea that “serious” interactions can be usefully treated as games – what I have called the “scientific metaphor” at the root of game theory. Secondary objectives are to introduce the concepts of best-response strategies and the representation of games in normal form. Thus, the chapter starts with an example from war, which most people without preparation in game theory would think of as a most natural field for thinking of strategy, and the chapter begins with an example presented in extensive form, because it seems to be a more intuitive and natural way of thinking about strategy. Interweaved with this are some discussions of the origins of game theory. The chapter also takes up an episode from the movie version of “A Beautiful Mind,” since it seems very likely that many students will have seen the movie and it may be a major source of whatever ideas they have about game theory. The Prisoner’s Dilemma is the one example they are most likely to have seen in one or more other classes, so it belongs here, too.Using the Karplus Learning Cycle as a major organizing principle, I open with an example – the Spanish Rebellion – and only then introduce the general ideas it illustrates, and then follow with another example, NIM. Again, the discussion of the game in normal form begins with an example, the familiar Prisoner’s Dilemma, then proceeds to the general principles and follows with two more examples, the one from the movie and an advertising dilemma. This procedure is “psycho-logical” rather than logical, and someinstructors may not be familiar with it. However, I think it works well with most students, who can understand the general principles better if they have an example already in mind.Accordingly, the key concepts areDefinition of Game TheoryHistory and emergence of Game TheoryGame Theory as applicable to more than what we ordinarily think of as games.Representation in extensive form (tree diagrams)Best ResponseRepresentation in Normal Form2. Common Study ProblemsThe most important study problem probably will not actually emerge for a few class periods, but the roots are here in the first chapter: the concept of best response is difficult for some students, including some very good ones. Confusion may show up later in the form of a real difficulty in answering questions about social dilemmas: “How can this be a best response if it makes everybody worse off?” At this point, it may be helpful to emphasize that “best response” means the best response to other strategies that other players might choose, NOT necessarily a best response to the situation as a whole.Some (often very good) students may want to dispute whether the analysis of the Spanish Rebellion is really right. They have a point. It could be more completely represented as follows:Good Chance for Piust i s m Sure win for Pius But a) it doesn’t make any difference, since Hirtuleius will never choose to stay at Laminium, and give Pius a sure win. (That would not be subgame perfect, a concept we will get into in Chapter 14). b) Therefore, at the first step Hirtuleius commits himself to meeting Pius at the River Baetis, and it is that commitment that is shown by the firstdecision node. c) All game theory examples are simplified and abstracted in some ways,and we always need to take care that we have a simplification that focuses on theimportant points, rather than missing them. So it really is a good point to make, and this is a good example of the ways we need to be careful about our simplifying assumption.3. For Business StudentsThe major bait for business students in this chapter is purposely given a highprofile as the last example, the advertising game.4. Class AgendaFirst hour1) Get organizeda)Class Detailsb)Assignments2)Introductory presentation: What is Game Theory?Second hour1)Discussion of assignments, homework, etc.2)Discussion on Game Theory as a Scientific MetaphorDiscussion question: One issue in environmental policy is the passage ofresources on to the next and following generation. For example, forests andunderground aquifers can be of use to each generation, if they are preserved.However, if one generation uses them so intensively that they are destroyed,then future generations are deprived of that benefit. How might we capturethis as a “game?” Who are the players? What are the rules? Payoffs? Is theplay sequential or simultaneous?3)Play “The Environment Game” in class. Handout follows on the next page forconvenience in printing and copying.An In-Class GameFrom time to time in this class we will conduct some experiments with games, playing the games in class and discussing the results. Payoffs will be in GameBucks, and you will accumulate GameBucks throughout the class. Students’ GameBucks accumulations will be public knowledge. At the end of the class, students with above-average accumulations of GameBucks will get grade bonus points in proportion to the difference between the student’s accumulation and the class average. (Those below average will not be penalized). Your mastery of the principles of game theory should enable you to be more competitive in accumulating GameBucks.An Environment GameThis chapter focuses on the idea that “real-world” problems and interactions can be thought of as games. Environmental problems are often studied in game theoretic terms. One issue in environmental problems is the passage of resources on to the next and following generation. For example, forests and underground aquifers can be of use to each generation, if they are preserved. However, if one generation uses them so intensively that they are destroyed, then future generations are deprived of that benefit.For this game, students play in order, for example, around a circle from left to right. The first student is given a certificate with “One GameBuck” written at each end. The student has the choices of passing the certificate on to the next student in order, or tearing it in half and returning it to the instructor in return for two GameBucks. Each student who receives the certificate has the same choices, except the last. Each student who passes the certificate gets one GameBuck on his record. The last student can only pass it back to the experimenter for one point.The succession of students represents the succession of generations, each of which has the potential to get one GameBuck of benefit from the resource if it is preserved. The maximum benefit is equal to the number of students. If a student early in the ordering takes the opportunity to get two GameBucks, the total number of GameBucks awarded may be considerably less than this.5. Answers to Exercises and Discussion Questions1. The Spanish Rebellion. In her story about the Spanish Rebellion, McCullough writes "There was only one thing Hirtuleius could do: march down onto the easy terrain ... and stop Metellus Pius before he crossed the Baetis." Is McCullough right? Discuss.Yes, McCoullough is right. Hirtuleius must assume that Pius will respond to Hirtuleius’choice, and anticipate that response. If Hirtuleius marches for New Carthage, Pius will respond by taking Laminium and breaking out, the worst outcome for Hirtuleius. If Hirtuleius waits and marches for the River Baetis, Pius will march for New Carthage, with a good chance of beating Hirtuleius – Hirtuleius’ second worst outcome. But these are the only two possibilities, and second worst is better than very worse, so that is what Hirtuleius must choose.2. Nim. Consider a game of Nim with three rows of coins, with one coin in the top row, two in the second row, and either one, two or three in the third row. A) Does it make any difference how many coins are in the last row? B) In each case, who wins?a)Suppose there are just 2 pennies in the last line. Then Anna can take the one fromthe top line. Barbara is left with one of two choices – take 1 from either line,leaving the same game we had in the chapter, which we know Anna can win, ortake two from line, in which case Anna immediately takes the other two and wins.Thus first player wins in this case.b)Suppose there is just one in the last line. Then Anna can take the two from themiddle, leaving Barbara to take one of the others so Anna takes the remaining one and wins. Here again the first player wins.c)However, try what you will, you will find there is no way that Anna can win ifthere are three coins in the last row. Here, second player wins, so it does make adifference.There is a mathematical trick to figure out more complex games, fortunately, since a tree diagram for a Nim game with 3 coins in the last row would start out with 6 options for Anna and have from 3 to 5 for Barbara at the next stage, it would get pretty unwieldy. Do a Google search on “Nim” if you are interested in the trick.3. Matching Pennies. Matching pennies is a school-yard game. One player is identified as "even" and the other as "odd." The two players each show a penny, with either the head or the tail showing upward. If both show the same side of the coin, then "even" keeps both pennies. If the two show different sides of the coin, then "odd" keeps both pennies. Draw a payoff table to represent the game of matching pennies in normal form.OddHeads Tails EvenHeads2,00,2Tails0,22,0The standard of reading is assumed with the first payoff to even and the second to odd. (Even then odd.) 0- means wins no pennies; 2- means wins 2 pennies. Payoffs 1, -1 for wins one, loses one would be equally correct.4. Happy Hour. Jim's Gin Mill and Tom's Turkey Tavern compete for pretty much the same crowd. Each can offer free snacks during happy hour, or not. The profits are 30 to each tavern if neither offers snacks, but 20 to each if they both offer snacks, since the taverns have to pay for the snacks they offer. However, if one offers snacks and the other does not, the one who offers snacks gets most of the business and a profit of 50, while the other loses 20. Discuss this example using concepts from this chapter. How is the competition between the two tavern owners like a game? What are the strategies? Represent this game in normal form.Jim'sGive Snacks No SnacksGive Snacks20,2050,-20No Snacks-20, 5030,30TOM'SThis situation resembles a game because:• There is more than one player• Strategy is important• There are outcomes that depend on each player’s choice of strategyConsider the strategies and payoffs involved here. The basic strategies are: offerfree snacks, do not offer free snacks. If both offer snacks, their payoff is lower than if both do not offer snacks. However, if one bar chooses not to offer free snacks and the other does offer them, the potential payoff is superior to all other options.6. Quiz questionPlaced on the next page for convenience in copying and printing.Student name ____________________________Quiz – Game TheoryIn Game Theory at Work, James Miller writes: “When … my sister and I … were young teenagers, … Our mother told us she was going out into the yard but was expecting an important call. She told us to be sure to answer the phone when it rang.”(This was before home answering machines.) Neither teenager wanted to take the call, but each knew that unless one of them did so, they would both be punished for disobedience. What are the strategies? Represent this game in normal form.Answer:The strategies are “answer” or “don’t answer.” At this stage, this particular game needs to be expressed in normal form, since there is a “trick” to putting it into extensive form that will only be covered in the next chapter.SisterAnswer Don’tAnswer-2,-2-1,1JamesDon’t1,-1-5,-5Or, with qualitative rather than number payoffs,SisterAnswer Don’tAnswer Some confusion, someconfusionembarrassment, noembarrassmentJamesDon’t no embarrassment,embarrassmentpunished, punished1.11。
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Chapter 5Legal LiabilityThe legal liability section is difficult to teach. We want the students to have a flavor for the auditor's legal responsibility without overwhelming them with material to memorize that they are unlikely to remember. The legal environment is also significantly different for individuals, depending on their employment choice. Internal and governmental auditors have little, if any, concern, while those who work for national CPA firms are greatly affected by SEC law. Smaller CPA firm employees are more concerned with client and third party common law. We also don't want students to believe that legal liability is the dominant consideration in an auditor's life.The following are the major things we try to cover:⏹Chapter opening vignette⏹The changed legal environment⏹Distinction among business failure, audit failure, and audit risk⏹Prudent person concept⏹Review of definitions⏹Liability to clients⏹Liability to third parties under common law⏹Civil liability - Securities Act of 1933⏹Civil liability - Securities Exchange Act of 1934⏹Criminal liability⏹Profession's response to liability⏹Summary of chapters 1, 2, 4, and 5Chapter Opening Vignette - “It Takes the Net Profit from Many Audits to Offset the Cost of One Lawsuit”This vignette is fairly straightforward. It shows that an auditor can get sued even when he or she does everything right. In addition, once the suit is filed, the cost of riding it out is immense. Once these realities are grasped, an auditor should be convinced and motivated to be extremely careful to avoid high-risk clients and to ensure that auditing standards are complied with.The vignette raises an important economic issue as well: the relationship between risk and fees. If auditors are too w illing to “low-bid” fees to get work, and their average fees across all clients are low, then their fee structure may not be sufficient to justify the risks they are taking.The vignette can also be used to discuss the nonmonetary costs of litigation. It is important for students to get some feel for the stress that is placed on individuals and the practice as a whole by a lawsuit.The Changed Legal Environment (page 112)It is useful to show students T-5-1 related to the history of legal liability for CPA firms. It gives them a perspective that it is fairly recent that liability has been a problem for CPAs.(See T-5-1)Next we ask students to compare the liability of CPAs and other professionals such as physicians, attorneys, and automobile manufacturers. (They are not substantially different.) It might be helpful to bring a recent article from the newspaper or business journal about a huge judgment or settlement in some other field.It is also useful to ask students to state their opinions of the costs and benefits to society of extensive liability of CPAs. Should there be no liability? Should CPAs be guarantors and insurers of the accuracy of financial statements? Is there now too much or too little liability?Review Question 5-2 is a good one to discuss at this point. We want students to think about the need for CPAs to be responsible for their actions, the cost and benefit to society of extensive liability, the need to attract competent people to the CPA profession, and the difference of opinions held by different people depending on their values.Distinguishing Business Failure, Audit Failure, and Audit Risk (page 113) Students need to be able to distinguish between business failure and audit failure. We often give the students a couple of examples of both and then ask them to distinguish whether the example represents business failure or audit failure. The opening vignette is useful when pointing out that auditors are often penalized for business failures, even when there has not been an audit failure. We use this discussion to describe the expectation gap that exists between users and the accounting profession. This provides a good opportunity to discuss how that gap can be narrowed (e.g., educating users, changing auditor professional responsibilities, etc.).This is a nice point to introduce the four major sources of legal liability for auditors that are summarized in Figure 5-1 (page 116).(See Figure 5-1)Prudent Person Concept (page 114)It is useful to go over the prudent person concept emphasizing the items in T-5-2.(See T-5-2)It is relevant to dwell on the second item and ask students about their legal responsibility as new employees when they are assigned a task they do not feel qualified to do. Students tend to have an attitude of "The CPA firm is responsible to properly supervise me and review my work, and I am only an employee."It is also relevant to ask or discuss how the prudent person concept is implemented in practice given that a "reasonable person concept" is nebulous. Discuss the use of expert witnesses and the pros and cons of having lay people sit on juries involving technical subjects.Review of Definitions (page 115)Our discussion of definitions is ordinarily limited to telling students, preferably during the class period preceding the discussion of liability, to know the definitions in the early part of the chapter. It is useful to briefly go over the legal terms in Table 5-1 (page 115).(See Table 5-1)Liability to Clients (page 116)It should be emphasized that there are more lawsuits by clients than any other source, but the suits are usually small, not reported to the press, frequently settled out of court, and usually have no significance in setting new precedents.(See T-5-3)We emphasize the plaintiff's need to establish the CPA's negligence and auditor's defenses. The auditor's primary defenses are included in T-5-4.(See T-5-4)An example using taxes, audits, or unaudited engagements can be used to illustrate the differences in the defenses.You may want to briefly summarize 1136 Tenants case (page 117) because many students may not understand what unaudited means at this point. The impact on the profession is the most important part of that case.Liability to Third Parties Under Common Law (page 119)The two most important concepts for students to understand in common law are:⏹Known versus unknown third parties and the impact on liability⏹The variation in different legal jurisdictions in their interpretationsThe graph in T-5-5depicts the environment of legal liability to third parties under common law.(See T-5-5)Each letter indicates a degree of negligence and a level of known and unknown users. For A, B, and C there is clear legal responsibility. For M, N, and O there is clear nonlegal responsibility. There is more legal responsibility for D than F, and D than J. There is no way to state whether there is more legal responsibility for F than J.Problems 5-18, 5-19, 5-20, 5-22, 5-23 and/or 5-24 are useful problems at this point.Civil Liability - Securities Act of 1933 (page 121)Most students need to be told the meaning of a registration statement and how it differs from a 10-K. Review Question 5-12 is useful for this.Ask students whether they consider the 1933 Act equitable to auditors with regard to each of the three points discussed under the Securities Act of 1933. A favorite quote about the 1933 Act was made by George O. May (1936).(See T-5-6)The BarChris case (page 122) should be referred to or discussed in reference to understanding the client's business, which is now required by the second standard of fieldwork, and AU 560 (Subsequent Events). The relationship between legal liability and SASs can be conveniently discussed at this point.Civil Liability - Securities Exchange Act of 1934 (page 122)Students need to understand that the 1934 Act applies to auditors each year for all publicly held companies.Start by going over Rule 10b-5 with the students and ask them to explain what it says. At that point spend some time on Hochfelder, especially the quote included in the summary of Hochfelder v. Ernst & Ernst (page 123).We then ask students:1. How do you believe critics of the auditing profession feel about theHochfelder case?2. Do you believe the auditor should only be responsible when there ismanipulation and deception, or should the auditor also be responsible fornegligence?The unsettled nature of the 1934 Act is then discussed along with other actions that can be used by the SEC. Case 5-28 is useful for this material. Problem 5-25 can be used to distinguish the requirements for legal liability under the 1933 and 1934 acts.Criminal Liability (page 125)We emphasize how critical criminal liability is because of the inability to insure for it, and the personal impact on partners and staff. We make the point that a person need not perceive himself as a criminal to find himself in a circumstance where he is found guilty of committing a crime.Go over the United States v. Andersen (2002) case (page 126) and discuss the role the criminal conviction played in the demise of the Andersen firm. Many students are aware of the document shredding in the case and are surprised that it was not a source of the criminal conviction.Problem 5-23, Part c, is useful at this point.The Profession's Response to Liability (page 127)It is useful to conclude the section by distinguishing between what three groups can do to reduce CPAs' liability: the profession, CPA firms, and relatively inexperienced staff. We discuss these using the material at the end of the chapter as a frame of reference. Go over the list of "individual responses" and ask students, "which of these can you do during your first two years as an auditor?"Summary of Chapters 1, 2, 4, and 5As an introduction or a summary, it is useful to relate auditing standards (including quality control standards), professional ethics, competition, and accountants' liability as forming a system for the control of the performance of audit services by CPAs at a high level. All four elements of this system are important.(See T-5-7)CHAPTER 5CROSS-REFERENCE OF LEARNING OBJECTIVES AND PROBLEM MATERIAL5-6HISTORICAL PERSPECTIVE OF LEGAL LIABILITYPRUDENT PERSON CONCEPT∙Employment of skill with reasonable care and diligence∙If one offers his or her service, he or she must have the required skills∙He or she undertakes for good faith and integrity, but not for infallibility∙He or she is liable for acts resulting from negligence, bad faith or dishonesty, but not pure errors of judgmentMOST LIKELY CAUSES OFLAWSUITS BY CLIENTS∙Alleged failure to deliver financial statements or tax returns on a timely basis∙Alleged failure to discover a fraud in audits and unaudited engagements∙Alleged errors in preparing tax returns resulting in deficiency assessments∙Alleged errors in preparing financial statements resulting in the failure to get a loanAUDITOR'S DEFENSES —SUITS BY CLIENTS∙Lack of duty to perform the service∙Nonnegligent performance (expert witness) ∙Contributory negligence∙Absence of causal connectionLIABILITY TO 3RD PARTIES - RELATIONSHIP OF "KNOWN 3RD PARTY" AND "DEGREE OF NEGLIGENCE"EXTENSIVE NEGLIGENCE•A B CD E FUNKNOWN 3RDPARTY• •G H IKNOWN 3RDPARTY USERJ K LM N O•NON-NEGLIGENCEGEORGE O. MAY, 1936OPINION OF LIABILITY UNDER THE1933 ACTI cannot believe that a law is just or can long be maintained in effect which deliberately contemplated the possibility that a purchaser may recover from a person from whom he has not bought, in respect of a statement which at the time of his purchase he had not read, contained in a document which he did not then know to exist, a sum which is not to be measured by injury resulting from falsity in such statement.THE "SYSTEM" FOR CONTROL OF THE QUALITY OF AUDIT SERVICESBY CPAsProfessional StandardsCompetitionProfessional Ethics Legal Liability。