EC120 Lecture Notes - Lecture 5: Marginal Utility, Demand Curve, Marginal Cost

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EC120 Lecture Notes - Lecture 1: Mixed Economy, Division Of Labour, Barter

EC120 Lecture Notes - Lecture 2: Social Cost, Allocative Efficiency, Technological Change

EC120 Lecture Notes - Lecture 5: Marginal Utility, Demand Curve, Marginal Cost

Document Summary

**pro tip: masakure takes some of his questions straight off of my econ lab and just inserts different numbers** Resource allocation methods: because resources are scarce, some mechanism must allocate them. The alternative allocation methods are: market price, command, majority rule, contest, personal characteristics. Ideas about fairness can be divided into two groups: fair results and fair rules. Fair results ideas require income transfers from the rich to the poor. Fair rules ideas require property rights and voluntary change. Big tradeoff the tradeoff between equality and efficiency. Command system a method of allocating resources by the order (command) of someone in authority. In a firm a managerial hierarchy organizes production. Consumer surplus the excess of the benefit received from a good over the amount paid for it. It is calculated as the marginal benefit (or value) of a good. It is equal to the decrease in total surplus that results from an inefficient level of production.

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1. the marginal cost curve is

A. Downward sloping to reflect the bowed out PPF.

B. Downward sloping as marginal benefits increase.

C. Upward sloping because marginal cost falls as more of a good or service is produced.

D. Upward sloping to reflect the increasing opportunity cost of producing one more unit.

E. U-shaped to reflect the bowed out PPF.

2. Allocative efficiency occurs

A. Anywhere inside or on the production possibilities frontier.

B. When the total cost of production is minimized

C. At all points on the production possibilities frontier.

D. At only one point on the production possibilities frontier.

E. At the points where the production possibilities frontier crosses the horizontal or vertical axis.

3. Auditors working for a large accounting firm are often away from the office. When they are in the office, they are allowed to use any desk that is available. Which method is used to allocate desks?

A. lottery

B. first-come, first-served

C. Command

D. Contest

E. Sharing equally

4. The marginal cost of a good or service

A. Can be calculated from the marginal benefit of that good or service.

B. decreases as more of the good or service is produced.

C. Can be derived from the production possibilities frontier.

D. Graphs as a positively sloped curve, so it cannot be derived from the production possibilities frontier, which is downward sloping.

E. None of the above answers is correct.

5. The maximum amount of other goods and services that people are willing to give up in order to get one more unit of a good is defined as the good's

A. Marginal benefit.

B. Total benefit.

C. Marginal cost

D. Total cost.

E. Price.

Managers of a monopoly under rate of return regulation have an incentive to

a. underestimate the firm's costs.

b. exaggerate the firm's costs.

c. minimize the monopoly's deadweight loss.

d. exaggerate the firm's profit.

e. earn zero economic profit.

Which of the following is correct?
i. All linear demand curves have a constant slope and a constant price elasticity of demand.
ii. The price elasticity of demand changes while moving along a downward-sloping linear demand curve.
iii. The magnitude of the slope of all linear demand curves is equal to the price elasticity of demand.

a. iii only.

b. ii only.

c. i, ii, and iii.

d. i only.

e. i and ii.

________ natural monopolies is a commonly used, potential solution to the problems presented by natural monopolies.

a. Giving incentives to firms to become

b. Regulating

c. Breaking up firms that are

d. Outlawing price discrimination by

e. Refusing to grant patents to

In the short run, a perfectly competitive firm

a. must suffer an economic loss.

b. must earn an economic profit.

c. might make an economic profit, incur an economic loss, or make a normal profit.

d. must make either an economic profit or a normal profit.

e. must earn a normal profit.

To determine if a market is an oligopoly, we need to determine if

a. cartels are legal in their market.

b. the firms are so few that they recognize their mutual interdependencies.

c. the firms make identical or differentiated products.

d. there are many firms in the market.

e. the market's HHI is less than 900.

Increasing marginal returns to labor

a. occur only when there are increasing marginal returns to capital.

b. are the result of specialization and division of labor in the production process.

c. describe the portion of a total product curve where the marginal product is negative.

d. mean that two workers produce less than twice the output of one worker.

e. occur when a particularly efficient worker is employed.

The return to entrepreneurship, which is what the firm's owner could earn running another business, is known as

a. entrepreneur's profit.

b. economic profit.

c. excessive profit.

d. accounting profit.

normal profit.

Both price supports and a price floor can

a. decrease the price below the equilibrium price.

b. increase consumer surplus.

c. create a deadweight loss.

d. decrease output below the equilibrium quantity.

e. have no effect on producer surplus.

In economics, cost is ________, and benefit is ________.

a. the amount of money that you pay for something; the amount of money that someone else is willing to pay you
b. what you must give up to get something; what you are willing to give up to get it
c. the amount of money that you pay on the margin; the amount of money that you receive on the margin
d. what you are willing to give up to get it; what you must give up to get something
e. what you are willing to pay on the margin; what the government pays you when you are unemployed or retired

If a substitute good is easy to find, then demand for a good is

a. unit elastic.

b. perfectly inelastic.

c. elastic.

d. inelastic.

e. Substitutes don't have any effect on elasticity.

17. Which of the following is a determinant of supply?

A. Tastes and preferences

B. Price of a complementary good

C. Consumer income

D. Technology

18. A market is in equilibrium:

A. provided there is no surplus of the product

B. at all prices above that shown by the intersection of the supply and demand curves

C. if the amount producers want to sell is equal to the amount consumers want to buy

D. whenever the demand curve is downsloping and the supply curve is upsloping.

19. If the market price is above the equilibrium price:

A. A shortage will occur and producers will produce more and lower prices

B. A surplus will occur and producers will produce less and lower prices

C. A surplus will result and consumers will bid prices up

D. Producers will make extremely high profits

20. The market system automatically corrects a surplus condition in a competitive market by:

A. Raising the price of the commodity in question while increasing the quantity demanded

B. Raising the price of the commodity in question while decreasing the quantity demanded

C. Reducing the price of the commodity in question while increasing the quantity demanded

D. Reducing the price of the commodity in question while decreasing the quantity demanded

21. The price elasticity of demand measures:

A. buyer responsiveness to price changes.

B. the extent to which demand curve shifts as incomes change.

C. the slope of the demand curve.

D. how far business executives can stretch their fixed costs

22. The elasticity of demand for a product is likely to be greater:

A. if the product is a necessity, rather than a luxury good.

B. the greater the amount of time over which buyers adjust to a price change

C. the smaller the proportion of one's income spent on the product.

D. the smaller the number of substitute products available.

23. Market failure is said to occur whenever:

A. private markets do not allocate resources in the most economically desirable way

B. prices rise

C. some consumers who want a good do not obtain it because the price is higher than they are willing to pay

D. government intervenes in the functioning of private markets.

24. A negative externality or spillover cost occurs when:

A. firms fail to achieve allocative efficiency.

B. firms fail to achieve productive efficiency.

C. the price of the good exceeds the marginal cost of producing it.

D. the total cost of producing a good exceeds the costs borne by the producer

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EC120 Lecture Notes - Lecture 5: Marginal Utility, Demand Curve, Marginal Cost

EC120 Lecture Notes - Lecture 1: Mixed Economy, Division Of Labour, Barter

EC120 Lecture Notes - Lecture 2: Social Cost, Allocative Efficiency, Technological Change

EC120 Lecture Notes - Lecture 5: Marginal Utility, Demand Curve, Marginal Cost

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