# Econ 201, Microeconomics Principles, Final Exam Version 1

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1 Econ 201, Microeconomics Principles, Final Exam Version 1 Instructions: Please complete your answer sheet by filling in your name, student ID number, and identifying the version of your test (1 or 2). Remember to fill in your response circles completely with a number 2 pencil. This is a closed book and not exam, and you may not use a calculator. In the above decision tree, Tracy picks first and Amy picks second. Tracy knows Amy's payoffs to each choice and Amy knows Tracy's payoffs. 1. If the payoffs at the end of each branch are as shown, we can predict that A. Tracy will always pick Y B. Amy will always pick the lower branch of Y. C. Tracy will always pick Z. D. Amy will pick the lower branch of Z. E. Tracy does not know whether to pick Y or Z.

2 2. If the payoffs at the end of each branch are as shown, we can predict that A. Amy will always pick the lower branch regardless of Tracy's choice. B. Tracy will NOT pick Z. C. Amy will pick the lower branch if Tracy chooses Y. D. Tracy is indifferent between Y and Z. E. Amy will pick the upper branch after Tracy chooses Z. Mexico and the members of OPEC produce crude oil. Realizing that it would be in their best interests to form an agreement on production goals, a meeting is arranged and an informal, verbal agreement is reached. If both Mexico and OPEC stick to the agreement OPEC will earn profits of \$200 million and Mexico will earn profits of \$100 million. If both Mexico and OPEC cheat then OPEC will earn \$175 million and Mexico will earn \$80 million. If only OPEC cheats, then OPEC earns \$185 million and Mexico \$60 million. If only Mexico cheats, then Mexico earns \$110 million and OPEC \$150 million. 3. The outcome of this game is A. unknown. B. a Nash equilibrium with both Mexico and OPEC cheating. C. a Nash equilibrium with Mexico cheating and OPEC not cheating. D. a Nash equilibrium with Mexico not cheating and OPEC cheating. E. a Nash equilibrium with both Mexico and OPEC not cheating. 4. A cartel is A. another name for pure monopoly. B. a coalition of consumers. C. a highly stable arrangement. D. a coalition of firms that agree to restrict output in an effort to earn economic profits. E. a trade agreement between countries.

3 5. The reason most cartels end or cease to be effective is A. enforcement of antitrust legislation. B. the development of substitutes. C. the dominant member firm buys out the other firms. D. consumers discover the agreement and buy from other firms. E. the incentive to cheat on the cartel agreement. 6. When part of the cost of an activity falls on people not pursuing the activity, it is call a(n) A. external benefit. B. prisoner's dilemma. C. negative externality. D. positive externality. E. efficient allocation. 7. Because production of paper imposes costs on society, the optimal level of production is A. zero. B. less than the equilibrium quantity of 300, but more than zero. C D. more than 300 but less than the equilibrium quantity of 350. E. determined by negotiations between the firm and affected parties.

4 8. Assume that a Coase Theorem solution (private negotiation) is impractical for solving the externality problem illustrated. The efficient equilibrium could be achieved by A. banning production of the good. B. compensating those injured by the externality. C. taxing the good by an amount equal to the external cost. D. subsidizing the good by an amount equal to the external benefit. E. informing the public of the external cost produced by production of the good. 9. For most people, baking cinnamon rolls generates externality, and burning tires generates externality. A. A positive; a negative B. A negative; a positive. C. A positive, no D. no; a negative E. no; a positive Your economics professor has announced the following grading policy: For each exam, the highest score in the class will be entered as a 100%; all other scores will be entered as the percent of that top score. For example, if the highest test score is a 50 out of 100, it will be counted as a perfect paper, and exams with a score of 40 out of 100 will be entered as an 80%. The final grade for the course will be determined using these adjusted percentages, with 90% and above an A, 80% and above a B, 70% and above a C and below 70% not passing. 10. The students all get together and decide not to study for the next exam because if nobody does well, they will all do okay. This plan A. requires everyone to follow their dominant strategy. B. will be stable because there are no incentives to deviate. C. will be unstable because there is an incentive to break the agreement. D. is a commitment device, and thus stable. E. results in a Nash Equilibrium.

5 11. To say that a particular good is nonrival means that A. it has no substitutes. B. consumers can enjoy it without paying for it. C. consumption of the good by one person does not diminish the availability of the good to others. D. it is the best good, i.e., it has no rivals. E. consumption of the good by one person reduces the availability of the good to others. 12. If it is impossible or highly costly to prevent consumers from consuming a good when they have not paid for it, the good is a(n) good. A. nonexcludable B. pure public C. private D. nonrival E. common 13. When dealing with pure public goods, A. the government must always provide them. B. private firms will always provide them. C. the government frequently provides them although private firms provide some. D. the government must legally compel private firms to provide them. E. private firms provide nearly all of them and the government provides the few remaining ones.

6 The 20 residents of the village of Towneburg are considering hosting a fireworks show next summer. The total cost of the show is estimated to be \$1,000 + \$10 per unit. Each resident's demand for fireworks is identical: P=50 2 * units as shown below: 14. Cheap Charlie is one of Towneburg's 20 residents. While Charlie enjoys fireworks as much as the next Towneburger, when the fireworks fund-raising campaign kicks off, he claims to hate them. Cheap Charlie is trying to A. free ride B. prevent the fireworks show from taking place C. force the village to be more efficient D. log-roll E. rent seek. 15. For many pure public goods like fireworks displays, weather forecasts, and television broadcasts the marginal cost of serving one more consumer is, and therefore the optimal quantity occurs when. A. zero; provision is infinite B. determined by average cost rather than marginal cost; price equals average cost. C. greater than average cost; government provides the good. D. zero; marginal benefit equals zero. E. negative; it is not provided at all.

7 16. The major prediction of the lemons model is that A. the presence of asymmetric information reduces the average quality of goods for sale. B. people will generally choose the 'low hanging fruit'. C. if one sells a used car in good condition, one will not be penalized. D. if one buys a used car, one can expect it to be in better than average condition. E. the presence of asymmetric information increases the average quality of goods for sale. 17. One implication of the lemons model as applied to the used car market is that A. one should never buy a used car. B. a below blue book price for a used car is likely to be a good deal. C. one should never pay more than the blue book price. D. a car with a price equal to its blue book value, without additional information, is likely to be a below average quality car. E. a car with a price above its blue book value, without additional information, is likely to be a better than average quality car. Vinnie is looking for an apartment in Dayton, Ohio. In Dayton, 75% of the two bedroom, one bath apartments are \$800 a month and 25% are \$600. The marginal cost of his search is \$15 per search, i.e., the marginal cost of looking at the first apartment is \$15, the marginal cost of looking at the second apartment is \$30, and so on. 18. The optimal amount of information to acquire before making a purchase is A. zero. B. as much as technically possible. C. the amount where the total cost of acquiring information equals the total benefit. D. independent of the expenditure to be made. E. the amount where the marginal cost of acquiring information equals the marginal benefit. 19. A market equilibrium is only efficient when A. buyers and sellers each earn equal surplus from the transaction. B. consumer surplus and producer surplus are both zero C. All relevant costs, including those imposed on others, are accounted for. D. Income is distributed equitably E. Firms are earning positive profits.

8 20. Suppose a perfectly competitive industry has an external cost (e.g., noise pollution). The market outcome will be because the equilibrium price is. A. inefficient; greater than the true cost B. efficient; correct C. inefficient; too high D. efficient; too low E. inefficient; less than the true cost 21. If demand is perfectly price inelastic, A. the burden of a tax is shared equally. B. the burden of a tax falls entirely on the seller. C. the burden of a tax falls entirely on the buyer. D. the burden of a tax will depend on the legal assignment of duty to pay. E. deadweight loss will be infinite.

9 22. Suppose a price ceiling is imposed at \$4. The value of the consumer surplus is A. \$16 B. \$20. C. \$24. D. \$28. E. \$ The value of marginal product A. equals marginal product. B. describes the costs of hiring an extra worker. C. equals marginal product divided by net price. D. equals average product times the wage rate. E. equals marginal product times net price. 24. In a competitive labor market, it is observed that the equilibrium wage rate and employment level have both risen. One can infer that A. the supply of labor has increased. B. the demand for labor has fallen. C. the price firms receive for their output has declined. D. the supply of labor has decreased. E. the demand for labor has increased. Suppose that this graph describes the current labor market for high school teachers:

10 25. If wages are currently W*, A. there will be a shortage of certified teachers. B. there will be a surplus of certified teachers. C. the market is in equilibrium: neither a shortage nor a surplus exists. D. more teachers will be attracted into this profession. E. teachers are underpaid. 26. A minimum wage law that prohibits employers from paying workers less than a specified hourly wage that is above the equilibrium wage A. results in a labor surplus. B. results in a labor shortage. C. is an example of a price ceiling. D. resets the legal wage rate below the equilibrium. E. is the most efficient way to assist the working poor. 27. Arguments in favor of programs that tax income to redistribute wealth include: A. these programs provide a financial incentive to work harder. B. these programs provide a financial incentive to invest in human capital. C. these programs help to reduce poverty. D. these programs discourage firms from discriminating in their hiring. E. these programs reward innovation. 28. The reason people in Professor Rawls' thought experiment would choose a uniform distribution of income is A. concern for the welfare of their fellows. B. Karl Marx was right. C. people are risk seeking. D. it is the easiest distribution to implement. E. they fear ending up in a disadvantaged position.

11 29. Suppose a competitive firm and a monopolist are both charging \$5 for their respective outputs. One can infer that A. marginal revenue is \$5 for both firms. B. marginal revenue is \$5 for the competitive firm and less than \$5 for the monopolist. C. marginal revenue is less than \$5 for both firms. D. the competitive firm is charging too much and the monopolist too little. E. both firms are earning profits. 30. Because the monopolist charges a price in excess of marginal costs, it must be the case that the monopolist A. earns an excessive profit. B. earns a profit, excessive or otherwise. C. fails to equate the benefits to the costs of the last unit produced. D. produces less than the socially efficient level of output. E. exploits the consumers who do make a purchase. 31. You have noticed that there is a persistent shortage of teachers in an inner-city school district in your state. Based on this observation, you suspect that A. The wage for teachers at those schools is higher than at other schools in the state. B. The wage for teachers at those schools is lower than the equilibrium wage. C. There is an excess supply of teachers. D. The wage for teachers at those schools is the equilibrium wage, but teachers don't apply economic concepts. E. The reservation price among teachers is lower than for other professions. 32. Suppose you bought a concert ticket from Ticketmaster for \$50, but when you got to the concert scalpers were selling tickets in the same seating area as yours for \$25. What is probably true? A. There is excess demand for this concert at the Ticketmaster price. B. The ticket you bought was under-priced for the market. C. There is an excess supply of tickets for this concert at the Ticketmaster price. D. The Ticketmaster price is an equilibrium price. E. The concert completely sold out at the Ticketmaster price.

12 33. Assuming consumers eat either rice or pasta for dinner every night. If the price of rice increases, in the pasta market one would expect to see A. increase in the quantity of pasta demanded. B. increase in the demand for pasta. C. decrease in the quantity of pasta demanded. D. decrease in the demand for pasta. E. indeterminate change in the pasta market. 34. Increases in the prices firms pay for inputs causes a(n) A. decrease in quantity supplied. B. increase in supply. C. increase in quantity supplied. D. decrease in supply. E. output prices to fall. 35. Suppose that the production of oranges reduces global warming by.1%. The equilibrium price of oranges is because not all of the are accounted for in the marketplace. A. too high; benefits B. too low; benefits C. too high; costs D. too low; costs E. optimal; costs 36. Consumer surplus measures A. marginal utility. B. total utility. C. the cumulative difference between real and nominal prices. D. the cumulative difference between price and maximum willingness to pay. E. the cumulative difference between the substitution effect and the income effect.

13 Final Examination Key In the above decision tree, Tracy picks first and Amy picks second. Tracy knows Amy's payoffs to each choice and Amy knows Tracy's payoffs. 1. If the payoffs at the end of each branch are as shown, we can predict that a. Tracy will always pick Y b. Amy will always pick the lower branch of Y. C. Tracy will always pick Z. d. Amy will pick the lower branch of Z. e. Tracy does not know whether to pick Y or Z. 2. If the payoffs at the end of each branch are as shown, we can predict that a. Amy will always pick the lower branch regardless of Tracy's choice. b. Tracy will NOT pick Z. c. Amy will pick the lower branch if Tracy chooses Y. d. Tracy is indifferent between Y and Z. E. Amy will pick the upper branch after Tracy chooses Z.

14 Mexico and the members of OPEC produce crude oil. Realizing that it would be in their best interests to form an agreement on production goals, a meeting is arranged and an informal, verbal agreement is reached. If both Mexico and OPEC stick to the agreement OPEC will earn profits of \$200 million and Mexico will earn profits of \$100 million. If both Mexico and OPEC cheat then OPEC will earn \$175 million and Mexico will earn \$80 million. If only OPEC cheats, then OPEC earns \$185 million and Mexico \$60 million. If only Mexico cheats, then Mexico earns \$110 million and OPEC \$150 million. 3. The outcome of this game is a. unknown. B. a Nash equilibrium with both Mexico and OPEC cheating. c. a Nash equilibrium with Mexico cheating and OPEC not cheating. d. a Nash equilibrium with Mexico not cheating and OPEC cheating. e. a Nash equilibrium with both Mexico and OPEC not cheating. 4. A cartel is a. another name for pure monopoly. b. a coalition of consumers. c. a highly stable arrangement. D. a coalition of firms that agree to restrict output in an effort to earn economic profits. e. a trade agreement between countries.

15 5. The reason most cartels end or cease to be effective is a. enforcement of antitrust legislation. b. the development of substitutes. c. the dominant member firm buys out the other firms. d. consumers discover the agreement and buy from other firms. E. the incentive to cheat on the cartel agreement. 6. When part of the cost of an activity falls on people not pursuing the activity, it is call a(n) a. external benefit. b. prisoner's dilemma. C. negative externality. d. positive externality. e. efficient allocation. 7. Because production of paper imposes costs on society, the optimal level of production is a. zero. b. less than the equilibrium quantity of 300, but more than zero. C d. more than 300 but less than the equilibrium quantity of 350. e. determined by negotiations between the firm and affected parties.

16 8. Assume that a Coase Theorem solution (private negotiation) is impractical for solving the externality problem illustrated. The efficient equilibrium could be achieved by a. banning production of the good. b. compensating those injured by the externality. C. taxing the good by an amount equal to the external cost. d. subsidizing the good by an amount equal to the external benefit. e. informing the public of the external cost produced by production of the good. 9. For most people, baking cinnamon rolls generates externality, and burning tires generates externality. A. A positive; a negative b. A negative; a positive. c. A positive, no d. no; a negative e. no; a positive

17 Your economics professor has announced the following grading policy: For each exam, the highest score in the class will be entered as a 100%; all other scores will be entered as the percent of that top score. For example, if the highest test score is a 50 out of 100, it will be counted as a perfect paper, and exams with a score of 40 out of 100 will be entered as an 80%. The final grade for the course will be determined using these adjusted percentages, with 90% and above an A, 80% and above a B, 70% and above a C and below 70% not passing. 10. The students all get together and decide not to study for the next exam because if nobody does well, they will all do okay. This plan a. requires everyone to follow their dominant strategy. b. will be stable because there are no incentives to deviate. C. will be unstable because there is an incentive to break the agreement. d. is a commitment device, and thus stable. e. results in a Nash Equilibrium. 11. To say that a particular good is nonrival means that a. it has no substitutes. b. consumers can enjoy it without paying for it. C. consumption of the good by one person does not diminish the availability of the good to others. d. it is the best good, i.e., it has no rivals. e. consumption of the good by one person reduces the availability of the good to others. 12. If it is impossible or highly costly to prevent consumers from consuming a good when they have not paid for it, the good is a(n) good. A. nonexcludable b. pure public c. private d. nonrival e. common 13. When dealing with pure public goods, a. the government must always provide them. b. private firms will always provide them. C. the government frequently provides them although private firms provide some. d. the government must legally compel private firms to provide them. e. private firms provide nearly all of them and the government provides the few remaining ones.

18 The 20 residents of the village of Towneburg are considering hosting a fireworks show next summer. The total cost of the show is estimated to be \$1,000 + \$10 per unit. Each resident's demand for fireworks is identical: P=50 2 * units as shown below: 14. Cheap Charlie is one of Towneburg's 20 residents. While Charlie enjoys fireworks as much as the next Towneburger, when the fireworks fund-raising campaign kicks off, he claims to hate them. Cheap Charlie is trying to A. free ride b. prevent the fireworks show from taking place c. force the village to be more efficient d. log-roll e. rent seek. 15. For many pure public goods like fireworks displays, weather forecasts, and television broadcasts the marginal cost of serving one more consumer is, and therefore the optimal quantity occurs when. a. zero; provision is infinite b. determined by average cost rather than marginal cost; price equals average cost. c. greater than average cost; government provides the good. D. zero; marginal benefit equals zero. e. negative; it is not provided at all.

19 16. The major prediction of the lemons model is that A. the presence of asymmetric information reduces the average quality of goods for sale. b. people will generally choose the 'low hanging fruit'. c. if one sells a used car in good condition, one will not be penalized. d. if one buys a used car, one can expect it to be in better than average condition. e. the presence of asymmetric information increases the average quality of goods for sale. 17. One implication of the lemons model as applied to the used car market is that a. one should never buy a used car. b. a below blue book price for a used car is likely to be a good deal. c. one should never pay more than the blue book price. D. a car with a price equal to its blue book value, without additional information, is likely to be a below average quality car. e. a car with a price above its blue book value, without additional information, is likely to be a better than average quality car. Vinnie is looking for an apartment in Dayton, Ohio. In Dayton, 75% of the two bedroom, one bath apartments are \$800 a month and 25% are \$600. The marginal cost of his search is \$15 per search, i.e., the marginal cost of looking at the first apartment is \$15, the marginal cost of looking at the second apartment is \$30, and so on. 18. The optimal amount of information to acquire before making a purchase is a. zero. b. as much as technically possible. c. the amount where the total cost of acquiring information equals the total benefit. d. independent of the expenditure to be made. E. the amount where the marginal cost of acquiring information equals the marginal benefit. 19. A market equilibrium is only efficient when a. buyers and sellers each earn equal surplus from the transaction. b. consumer surplus and producer surplus are both zero C. All relevant costs, including those imposed on others, are accounted for. d. Income is distributed equitably e. Firms are earning positive profits.

20 20. Suppose a perfectly competitive industry has an external cost (e.g., noise pollution). The market outcome will be because the equilibrium price is. a. inefficient; greater than the true cost b. efficient; correct c. inefficient; too high d. efficient; too low E. inefficient; less than the true cost 21. If demand is perfectly price inelastic, a. the burden of a tax is shared equally. b. the burden of a tax falls entirely on the seller. C. the burden of a tax falls entirely on the buyer. d. the burden of a tax will depend on the legal assignment of duty to pay. e. deadweight loss will be infinite.

21 22. Suppose a price ceiling is imposed at \$4. The value of the consumer surplus is a. \$16 B. \$20. c. \$24. d. \$28. e. \$ The value of marginal product a. equals marginal product. b. describes the costs of hiring an extra worker. c. equals marginal product divided by net price. d. equals average product times the wage rate. E. equals marginal product times net price. 24. In a competitive labor market, it is observed that the equilibrium wage rate and employment level have both risen. One can infer that a. the supply of labor has increased. b. the demand for labor has fallen. c. the price firms receive for their output has declined. d. the supply of labor has decreased. E. the demand for labor has increased. Suppose that this graph describes the current labor market for high school teachers:

22 25. If wages are currently W*, a. there will be a shortage of certified teachers. b. there will be a surplus of certified teachers. C. the market is in equilibrium: neither a shortage nor a surplus exists. d. more teachers will be attracted into this profession. e. teachers are underpaid. 26. A minimum wage law that prohibits employers from paying workers less than a specified hourly wage that is above the equilibrium wage A. results in a labor surplus. b. results in a labor shortage. c. is an example of a price ceiling. d. resets the legal wage rate below the equilibrium. e. is the most efficient way to assist the working poor. 27. Arguments in favor of programs that tax income to redistribute wealth include: a. these programs provide a financial incentive to work harder. b. these programs provide a financial incentive to invest in human capital. C. these programs help to reduce poverty. d. these programs discourage firms from discriminating in their hiring. e. these programs reward innovation. 28. The reason people in Professor Rawls' thought experiment would choose a uniform distribution of income is a. concern for the welfare of their fellows. b. Karl Marx was right. c. people are risk seeking. d. it is the easiest distribution to implement. E. they fear ending up in a disadvantaged position.

23 29. Suppose a competitive firm and a monopolist are both charging \$5 for their respective outputs. One can infer that a. marginal revenue is \$5 for both firms. B. marginal revenue is \$5 for the competitive firm and less than \$5 for the monopolist. c. marginal revenue is less than \$5 for both firms. d. the competitive firm is charging too much and the monopolist too little. e. both firms are earning profits. 30. Because the monopolist charges a price in excess of marginal costs, it must be the case that the monopolist a. earns an excessive profit. b. earns a profit, excessive or otherwise. c. fails to equate the benefits to the costs of the last unit produced. D. produces less than the socially efficient level of output. e. exploits the consumers who do make a purchase. 31. You have noticed that there is a persistent shortage of teachers in an inner-city school district in your state. Based on this observation, you suspect that a. The wage for teachers at those schools is higher than at other schools in the state. B. The wage for teachers at those schools is lower than the equilibrium wage. c. There is an excess supply of teachers. d. The wage for teachers at those schools is the equilibrium wage, but teachers don't apply economic concepts. e. The reservation price among teachers is lower than for other professions. 32. Suppose you bought a concert ticket from Ticketmaster for \$50, but when you got to the concert scalpers were selling tickets in the same seating area as yours for \$25. What is probably true? a. There is excess demand for this concert at the Ticketmaster price. b. The ticket you bought was under-priced for the market. C. There is an excess supply of tickets for this concert at the Ticketmaster price. d. The Ticketmaster price is an equilibrium price. e. The concert completely sold out at the Ticketmaster price.

24 33. Assuming consumers eat either rice or pasta for dinner every night. If the price of rice increases, in the pasta market one would expect to see a. increase in the quantity of pasta demanded. B. increase in the demand for pasta. c. decrease in the quantity of pasta demanded. d. decrease in the demand for pasta. e. indeterminate change in the pasta market. 34. Increases in the prices firms pay for inputs causes a(n) a. decrease in quantity supplied. b. increase in supply. c. increase in quantity supplied. D. decrease in supply. e. output prices to fall. 35. Suppose that the production of oranges reduces global warming by.1%. The equilibrium price of oranges is because not all of the are accounted for in the marketplace. a. too high; benefits B. too low; benefits c. too high; costs d. too low; costs e. optimal; costs 36. Consumer surplus measures a. marginal utility. b. total utility. c. the cumulative difference between real and nominal prices. D. the cumulative difference between price and maximum willingness to pay. e. the cumulative difference between the substitution effect and the income effect.

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