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ECO101H1 Lecture 22: Nov 20 - Monopolistic Competition

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School
UTSG
Department
Economics
Course
ECO101H1
Professor
Jack Carr

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ECO101H1 Full Course Notes
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ECO101H1 Full Course Notes
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Document Summary

Perfectly competitive firm: price always equals the marginal cost of production, price equals average total cost. Because in the long run, entry and exit drive economic profit to zero. Monopoly: can use market power to keep prices above marginal cost. Positive economic profit for the firm and deadweight loss for society. Imperfect competition: industries that fall between cases of perfect competition and a monopoly, oligopoly. A market structure in which only a few sellers offer similar or identical products. Small number of sellers makes rigorous competition less likely and strategic interactions among them important. Economist"s measure a market"s domination by a small number of firms with a statistic called the concentration ratio. The percentage of total output in the market supplied by the four largest firms. Include industries such as breakfast cereal, aircraft manufacturing, household laundry equipment, cigarettes, etc: monopolistic competition. A market structure in which many firms sell products that are similar but not identical.

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Related Questions

A. A competitive firm

  1. can consider only its location in setting the price.
  2. must base its competitive price on product differentiation.
  3. has the ability to set its own price.
  4. must accept the price determined by the intersection of the market supply and demand curves.
  5. has no supply curve.

B. If a firm is making an economic profit, then

  1. the factors of production are being paid their opportunity costs.
  2. there will be no change in the number of firms if the industry is perfectly competitive.
  3. the factors of production are being paid less than their opportunity costs.
  4. the factors of production are being paid more than their opportunity costs.
  5. the firm will exit the industry

C. Along a downward-sloping monopoly demand curve,

  1. marginal revenue is greater than price.
  2. the elasticity of demand is constant.
  3. marginal revenue decreases when the price decreases.
  4. marginal revenue is equal to zero when the price is equal to zero

D. If, in the short run, a perfectly competitive firm is producing at a point where the total cost is greater than total revenue, then the firm should

  1. shut down because economic profits are negative.
  2. continue to produce as long as P > AVC.
  3. continue to produce because accounting profits are positive.
  4. set a higher price for its output.
  5. set a lower price for its output

E. For a perfectly competitive firm, the demand curve is

  1. the marginal revenue curve.
  2. perfectly inelastic.
  3. always equal to marginal cost.
  4. the same as the market demand curve

F. A firm in a(n) industry will have the most elastic demand curve

  1. monopolistic
  2. oligopolistic
  3. monopolistically competitive
  4. perfectly competitive

G. If the demand curve of a monopolist is in the inelastic range, then

  1. total revenue will fall if the price increases.
  2. total revenue will be unchanged if the price increases.
  3. total revenue will rise if the price increases.
  4. the total supply will increase by an equal amount if demand increases.
  5. the price will be unchanged if total revenue increases

H. Monopolistic competition and oligopoly are examples of

  1. monopoly.
  2. perfect competition.
  3. theories of consumer behavior.
  4. imperfect competition.
  5. the extreme cases on the market structure continuum

I. Under which market structure do firms face the flattest (most elastic) demand curve?

  1. perfect competition
  2. monopolistic competition
  3. oligopoly
  4. monopoly

J. At the point of long-run equilibrium for a perfectly competitive firm,

  1. economic profits are zero.
  2. TR > TC.
  3. TR < TC.
  4. P = AVC.
  5. normal profits are zero.

32. Which of the following is not a difference between monopolies and perfectly competitive markets?

A. Monopolies face downward sloping demand curves while perfectly competitive firms face horizontal demand curves.

B. Monopolies charge a price higher than marginal cost while perfectly competitive firms charge a price equal to marginal cost.

C. Monopolies can earn profits in the long run while perfectly competitive firms break even.

D. Monopolies choose to produce the quantity at which marginal revenue equals marginal cost while perfectly competitive firms do not.

40. Which of the following statements is not correct?

A. Both monopolies and monopolistically competitive firms can earn economic profits in the long run.

B. Both monopolistically competitive and perfectly competitive firms can earn economic profits in the short run.

C. Only competitive firms produce the welfare-maximizing level of output.

D. Firms in perfect competition, monopolistic competition, and monopoly maximize profits by producing where marginal revenue equals marginal cost.

43. A monopolistically competitive firm is currently producing 20 units of output. At this level of output the firm is charging a price equal to $20, has marginal revenue equal to $12, has marginal cost equal to $12, and has average total cost equal to $18. From this information we can infer that

A. the profits of the firm are negative.

B. firms are likely to leave this market in the long run.

C. the firm is currently maximizing its profit.

D. All of the above are correct.

13. If a monopolistic competitor is producing an output for which marginal revenue is $40 and the marginal cost is $32, to maximize profits the firm should
A. decrease the level of output.
B. keep the level of output constant.
C. continue to make $8 per unit.
D. increase the level of output.

14. A monopolistic competitor will not make an economic profit unless
A. it engages in price discrimination.
B. its marginal revenue is greater than its marginal cost.
C. it faces an inelastic demand curve.
D. its price is greater than its average total cost.

15. The definition of monopolistic competition includes
A. few firms and ease of entry and exit.
B. few firms and barriers to entry and exit.
C. many firms and barriers to entry and exit.
D. many firms and ease of entry and exit.

16. Characteristics of monopolistic competition include all of the following except
A. significant barriers to entry.
B. a relatively large number of sellers and buyers.
C. small market share for each seller.
D. differentiated products.