ECN 104 Lecture Notes - Demand Curve, Market Power, Marginal Cost

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redhedgehog942

21 Sep 2014

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In this chapter, look for the answers to these questions: (cid:131) what market structures lie between perfect competition and monopoly, and what are their characteristics? (cid:131) how do monopolistically competitive firms choose. Two extremes (cid:131) perfect competition: many firms, identical products, free entry and free exit (cid:131) monopoly: one firm, huge barriers to entry. In between these extremes: imperfect competition (cid:131) oligopoly: only a few sellers offer similar or identical products. (cid:131) monopolistic competition: many firms sell similar but not identical products, free entry free exit in lr. Industry concentration (cid:131) four- firm concentration ratio: the % of total output produced & sold by an industry"s largest firms. Total output in the industry industry is considered monopolistically competitive if four-firm concentration ratio <40% (cid:131) (cid:131) industry is considered oligopolistic if four-firm concentration ratio > 40% (cid:131) herfindahl index. The index is the sum of the squared percentage market shares of all firms in the industry:

Related Questions

1. Which of the following is a characteristic of pure monopoly?

A. close substitute products

B. barriers to entry

C. the absence of market power

D. "price taking"

2. An example of a monopoly would be

A. one of many U.S. wheat farmers

B. one of the few U.S. automakers

C. AT&T cell phone service

D. the local water company

3. In which market structure do firms exist in very large numbers, each firm produces an identical product, and there is freedom of entry and exit?

A. monopoly

B. oligopoly

C. only perfect competition

D. only monopolistic competition

E. both perfect competition and monopolistic competition

4. Which of the following is the best example of a perfectly competitive market?

A. farming

B. diamonds

C. athletic shoes

D. soft drinks

E. electricity distribution

crimsonalligator541

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

byzantiumfish483

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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ECN 104 Lecture Notes - Demand Curve, Market Power, Marginal Cost

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