ECON 201 Chapter Notes - Chapter 13: Deadweight Loss, Marginal Revenue, Market Power

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4 Apr 2019

School

Ball State University

Department

Economics

Course

ECON 201

Professor

Jonathan Lamb

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Document Summary

How a firm uses market power to maximize profits. The benefits of monopoly: incentives for research and development. Market power: the power to raise price above marginal cost without fear that other firms will enter the market. Marginal revenue, mr: the change in total revenue from selling an additional unit. Marginal cost, mc: the change in total cost from producing an additional unit. To maximize profit, a firm increases output until mr=mc. Economies of scale: the advantages of large scale production that reduces average cost as quantity increases. Natural monopoly: said to exist when a single firm can supply the entire market at a lower cost than two or more firms. Barriers to entry: factors that increase the cost to new firms of entering an industry. Antitrust laws: these laws give the federal government legal authority to prosecute monopolies or attempts to monopolize.

Related Questions

1) A natural monopoly exists when:

a. A few firms collude to make one large firm

b. Firms enter the industry as a result of profit incentives

c. Economies of scale provide large cost advantages to having one firm produce the industry's output

d. Firms naturally maximize regardless of market structure

2) A(n) ____ is a single firm with ___, whereas a(n) ___ implies an industry with ____ firm(s) and ____ .

a. Monopoly; barriers to entry; oligopoly; few; no barriers to entry

b. Oligopoly; no barriers to entry; monopoly; many; easy entry and exit

c. Monopoly; barriers to entry; monopolistic competition; many; easy entry and exit

d. Monopolistic competitor; barriers to entry; monopoly; one; barriers to entry

3) In monopolistic competition:

a. Each firm produces a product identical to that of every other firm in the industry

b. Firms are aware of their strategic interdependence

c. Firms earn large economic profits in the long run

d. Firms earn zero economic profits in the long run

4) A monopolistically competitive industry, such as corn snack chips, and a perfectly competitive industry, like wheat farming, are alike in that:

a. There are many firms in each industry

b. Firms in both types of industries produce similar but not identical products

c. Barriers to entry in both industries are large

d. Firms in both types of industries produce identical products

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1. All of the following are characteristics of long-run equilibrium for firms in a monopolistically competitive market except:

A. price equals marginal cost.

B. price equals average total cost.

C. price exceeds the minimum of the average total cost.

D. marginal cost equals marginal revenue.

2. All of the following are strategies a firm with market power can adopt to increase its profits over time except:

A. erecting barriers to entry.

B. setting price equal to the marginal costs of production.

C. mergers with, and acquisitions of, competing firms.

D. influencing the regulatory process.

3. Assume that for a particular firm's output price = $80, marginal cost = $30, average total cost = $25. Based on this information, the firm's Lerner Index is equal to:

A. 0.313.

B. 0.625.

C. 0.6.

D. 0.375.

4. Assume that when the price is $20, the quantity demanded is 9 units, and when the price is $19, the quantity demanded is 10 units. Based on this information, what is the marginal revenue resulting from an increase in output from 9 units to 10 units?

A. $10

B. $1

C. $19

D. $20

5. Because firms produce a differentiated product, each of the firms in a monopolistically competitive market faces a demand curve that is:

A. perfectly elastic.

B. downward sloping.

C. perfectly inelastic.

D. perfectly elastic or perfectly inelastic depending on whether the firm's output is a luxury or a necessity.

6. Suppose a monopolist is producing a level of output such that MR > MC. What should the firm do to maximize its profits?

A. The firm should increase output.

B. The firm should increase the price.

C. The firm should do nothing - it wants to maximize the difference between MR and MC in order to maximize its profits.

D. The firm should hire less labor.

7. Suppose the firms in a monopolistically competitive market are earning positive economic profits. What will happen to move the market to its long-run equilibrium?

A. The demand curves faced by firms in the market will shift to the right.

B. The firms' demand curves will become less elastic.

C. More close substitutes will appear in the market.

D. Some firms will exit the market if they can't cover all of their fixed and variable costs.

8. The Lerner Index is a measure of market power that focuses on:

A. the difference between a firm's product price and its marginal costs of production.

B. the share of the market controlled by the X largest firms in the market.

C. the ratio of the price of a firm's product to the price elasticity of demand for the product.

D. the sum of the squares of the market share of each firm in an industry.

9. The measure of market power that focuses on the share of the market controlled by the X largest firms in the market is known as:

A. the Lerner Index.

B. the Herfindahl-Hirschman Index.

C. the Minimum-Efficient Scale Index.

D. a concentration ratio.

10. The monopoly characteristic of monopolistically competitive firms ensures that such firms will earn positive economic profits over the long-run.

a. True

b. False

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21)

Compared to the results in a perfectly competitive market, a monopoly does which of the following?

	It charges a higher price.
	It charges a price greater than the marginal cost.
	It produces less output.
	All of the above
	None of the above

22)

"X-inefficiency" refers to the idea that

	government restrictions on competition create a monopoly, which results in inefficiency.
	the cost of rent-seeking activity should be added to the welfare cost of monopoly.
	Generation X is less efficient due to a lack of competitive spirit.
	a lack of competitive pressure results in a monopoly not keeping its costs down to the lowest possible level.
	price discrimination results in inefficiently low cross-elasticities of demand.

23)

Firms in which of the following market structures can engage in price discrimination?

	monopoly
	oligopoly
	monopolistic competition
	All of the above
	None of the above

24)

Monopolistic competition and perfect competition are in all of the following ways except

	Barriers to entry are low in both
	There are many firms in both
	Firms in both produce the output level where MR=MC
	Nonprice competition is important in both

25)

To get rid of excess capacity from the monopolistic competition in the long run, what would have to be given up?

	Free entry and exit.
	economic rent
	resource allocative efficiency
	differentiated product
	productive efficiency

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ECON 201 Chapter Notes - Chapter 13: Deadweight Loss, Marginal Revenue, Market Power

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