Payoff: the amount that comes from a possible outcome or result. Expected value: the sum of the payoffs associated with each possible outcome of a situation, weighted by its probability of occurring. The nancial value of this deal to me, or its expected value, is sh. Half the time i win a dollar, and half the time i lose a dollar. Fair game or fair bet: a game whose expected value is zero. Diminishing marginal utility: the more of any one good consumed in a given period, the less incremental satisfaction is generated by consuming a marginal or incremental unit of the same good. The relationship between utility and income: the gure shows the way in which utility increases with income for a hypothetical person, Jacob: notice that utility increases with income but at a decreasing rate: the curve gets atter as income increases, this curve shows diminishing marginal utility of income.

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1. You are bidding in a second-price auction for a painting that you value at $800. You estimate that other bidders are most likely to value the painting at between $200 and $600. Which of these is likely to be your best bid?

a. $1,000

b. $800

c. $600

d. $400

2. Which of the following is true about different ways of conducting a private-value auction?

a. A first-price auction is strategically equivalent to a second-price auction.

b. A first-price auction is strategically equivalent to an English auction.

c. A second-price auction is strategically equivalent to an English auction.

d. None of the above

3. Suppose that five bidders with values of $500, $400, $300, $200, and $100 attend an oral auction. Which of these is closest to the winning price?

a. $500

b. $400

c. $300

d. $200

4. In the above auction, if the bidders with the first- and third-highest values ($500 and

$300) collude, which of these is closest to the winning price?

a. $500

b. $400

c. $300

d. $200

5. If a seller is concerned about collusion among bidders, which of the following changes to the auction, should the seller make?

a. Hold frequent, small auctions instead of infrequent large auctions.

b. Conceal the amount of winning bids.

c. Publically announce the name of each auction's winner.

d. Hold a second-price instead of a first-price auction.

6. You're holding an auction to license a new technology that your company has developed. One of your assistants raises a concern that bidders' fear of the winner's curse may encourage them to shade their bids. How might you address this concern?

a. Release your analyst's positive scenario for the technology's future profitability.

b. Release your analyst's negative scenario for the technology's future profitability.

c. Use an oral auction.

d. All of the above

7. In a first-price auction, you bid ________ your value, and in a second-price auction you bid _________ your value.

a. at; above

b. below; above

c. below; at

d. below; below

8. You hold an auction among three bidders. You estimate that each bidder has a value of either $16 or $20 for the item, and you attach probabilities to each value of 50%. What is the expected price? If two of the three bidders collude, what is the price?

9. In Sweden, firms that fail to meet their debt obligations are immediately auctioned off to the highest bidder. (There is no reorganization through Chapter 11 bankruptcy.) The current managers are often high bidders for the company. Why?

10. When a famous painting becomes available for sale, it is often known which museum or collector will be the likely winner. Yet, representatives of other museums that have no chance of winning are actively wooed by the auctioneer to attend anyway. Why?

11. The deities Mars and Venus often do battle to create the weather conditions on Earth. Venus prefers extreme temperatures (especially heat), while Mars prefers temperate conditions. The payoffs (expressed in Points of Wrath) are given below.

		Venus
		Warm	Chill
Mars	Warm	20 , 0	0 , 10
Chill	0 , 90	20 , 0

What is the unique mixed-strategy equilibrium of the above game?

(Let p be the probability of "Warm" for Mars, and q the probability of "Warm" for Venus.)

a) p=9/10, q=1/2

b) p=1/2, q=1/10

c) p=1/2, q=1/2

d) p=1/10, q=1/10

Player 2

		H	D
Player 1	H	0 , 0	4 , 1
D	1 , 4	2 , 2

12. The above game is the title of the hawk-dove game and used by evolutionary biologists to describe evolutionary processes. It is also used to model how a business should grow. In the above game, what is the Nash equilibrium in pure strategies and mixed strategies.?

Assume the cost of producing the goods is zero and that each consumer will purchase each good as long as the price is less than or equal to value. Consumer values are the entries in the table.

	Good 1	Good 2
Consumer A	$2,300	$1,700
Consumer B	$2,800	$1,200

13. Suppose the monopolist only sold the goods separately. What price will the monopolist charge for good 1 to maximize revenues for good 1?

a. $2,300

b. $2,800

c. $1,200

d. $1,700

14. What is the total profit to the monopolist from selling the goods separately?

a. $4,500

b. $6,300

c. $7,000

d. $6,000

15. What is a better pricing strategy for the monopolist? At this price, what are the total profits to the monopolist?

a. Bundle the goods at $2,800; Profits = $5,600

b. Bundle the goods at $4,000; Profits = $8,000

c. Charge $2,800 for good 1 and charge $1,700 for good 2; Profits = $4,500

d. Charging the lowest price for each good individually is the best pricing strategy; Profits = $7,000

16. The prisoners' dilemma is an example of

a. a sequential game.

b. a simultaneous game.

c.a shirking game.

d. a dating game

17. Nash equilibrium

a. is where one player maximizes his payoff, and the other doesn't.

b. is where each player maximizes his own payoff given the action of the other player.

c.is where both players are maximizing their total payoff.

d. is a unique prediction of the likely outcome of a game.

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1.When the term "price" is used in the law of demand, price refers to Select one:

a. the price of the well relative to the price of another good.

b. the nominal price of the well relative to its nominal price in the previous year.

c. the absolute price of the good.

d. the dollar price of the good.

2.In economics, the meaning of demand refers to Select one:

a. the quantities of a good that people will sell at various prices.

b. the total satisfaction that consuming good provides people at different prices.

c. how badly someone wants a good.

d. the quantities of a good that people will buy at various prices.

3.Which of the following illustrates the law of demand?

Select one:

a. College enrollment increases when federal tuition grants are readily available to students.

b. More people watch college basketball in March than in November.

c. The number of long-distance calls in the United States is greater on Christmas than on Valentine's Day.

d. The prevailing wage rate in an industry determines how many people choose to work in the industry.

4.The absolute price of a good is its

Select one:

a. money price.

b. projected price.

c. relative price.

d. subjective price.

5.The only variable that can affect a movement along the demand curve is

Select one:

a. the number of buyers.

b. income levels.

c. the price of the good itself.

d. the number of substitutes.

6.The price of an MP3 music player increased from $50 to $70 while the price of a music download increased from $1 to $2. The relative price of an MP3 music player in terms of music downloads Select one:

a. increased from 0.04 to 0.05.

b. decreased, but we need more information to know by how much.

c. increased, but we need more information to know by how much.

d. decreased from 50 to 35.

7.The quantity supplied of a particular good is the amount of the good that

Select one:

a. households want firms to sell at each price during a particular time period.

b. firms will actually end up buying at a particular price during a given time period.

c. firms are willing to sell at each price during a particular time period.

d. households are willing to consume at each particular price.

8.An increase in price will lead to an increase in quantity supplied. This statement is

Select one:

a. the law of supply.

b. untrue always.

c. the law of demand.

d. a normative statement.

9.Regarding the law of supply, which of the following statements is correct?

Select one:

a. As demand falls, supply rises.

b. The ceteris paribus assumption does not apply.

c. As the price of a good or service rises, the quantity supplied will increase.

d. As the price of a good or service rises, the quantity supplied will decrease.

10.A given supply curve illustrates Select one:

a. the relationship between expected future prices and quantity supplied.

b. the effect of a change in resource costs on the quantity supplied.

c. the effect of a change in technology on the quantity supplied.

d. the relationship between price and quantity supplied.

11.If there is a decline in the price of milk, an input in the production of ice cream, then there will be a(n)

Select one:

a. decrease in the supply of ice cream and a leftward shift of the supply curve.

b. increase in the supply of ice cream and a rightward shift of the supply curve.

c. increase in the quantity of ice cream supplied and a movement down along the supply curve.

d. decrease in the quantity of ice cream supplied and a movement up along the supply curve.

12. An improvement in technology in the production of computers would

Select one:

a. increase the demand for computers.

b. decrease the supply of computers.

c. decrease the demand for computers.

d. increase the supply of computers.

13.Which of the following is a non-price determinant of supply? Select one:

a. the number of consumers

b. technological advances in production

c. the price of related goods consumers may buy

d. consumers' incomes

14.Which of the following does NOT cause a rightward shift in the supply curve?

Select one:

a. a reduction in resource costs

b. an increase in technology

c. a reduction in the expected future price of the good

d. a reduction in the price of the good

15.Which of the following is a possible outcome of setting a legal maximum rental rate below the market-clearing rental rate?

Select one:

a. a decrease in the quantity of rental housing demanded

b. an increase in the quantity of rental housing supply

c. a black market in rental housing

d. a surplus of rental housing

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ECON 102 Lecture Notes - Lecture 13: Marginal Utility, Expected Utility Hypothesis, Root Mean Square

ECON 102 Full Course Notes

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