曼昆微观经济学复习题课件.pptVIP

Exercises;1. Suppose Bart, Benjamin, and Brent each purchase a particular type of electric pencil sharpener at a price of $20. Bart’s willingness to pay was $22, Benjamins willingness to pay was $25, and Brents willingness to pay was $30. Which of the following statements is correct? a. Had the price of the pencil sharpener been $26 rather than $20, only Brent would have been a buyer. b. Brent’s consumer surplus is the smallest of the three individual consumer surpluses. c. For the three individuals together, consumer surplus amounts to $60. d. The fact that all three individuals paid $20 for the same type of pencil sharpener indicates that each one placed the same value on that pencil sharpener.;2. If the quantity supplied is the same regardless of price, then supply is a. elastic. b. perfectly elastic. c. perfectly inelastic. d. inelastic. 3. When there is a shortage of 100 units of a particular good, a. the law of supply predicts(预报） upward pressure on the price of the good from its current level. b. the law of demand predicts downward pressure on the price of the good from its current level. c. we say that there is a scarcity of 100 units of the good. d. None of the above is correct. ;4. An increase in the number of college scholarships(奖学金） issued by private foundations would a. increase the supply of education. b. decrease the supply of education. c. increase the demand for education. d. decrease the demand for education.;5. National defense（国防） is provided by the government because a. it is impossible for private markets to produce public goods. b. products provided by the government are produced more efficiently. c. free-riders make it difficult for private markets to supply the socially optimal quantity. d. public goods increase government revenues. 6. Average total cost is very high when a small amount of output is produced because a. average variable cost is high. b. average fixed cost is high. c. marginal cost is high. d. marginal product is high.;7. Sup