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ECON 1000 Lecture Notes - Lecture 22: Monopolistic Competition, Marginal Revenue, Demand Curve

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School
Carleton University
Department
Economics
Course
ECON 1000
Professor
Nick Rowe

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Document Summary

Econ 1000 week 11 lecture 22. In long run outcomes of markets there are free entry and exits of markets. In monopolies the demand curve for the monopoly is the same as the market demand curve. Perfectly inelastic curve, which means marginal and average cost are above the price which is socially inefficient. In a small market, there are downward sloping demand curves. Price raising has a little affect on customers in small markets, for example a price raise would reduce customers but you would still have your same customers. Monopolistic competition: small firms, free entry, differentiated products downward sloping demand curve. Marginal revenue will be less than price: short run; same as a monopoly. Profit maximizing price is the point on the demand curve where price is higher than marginal cost and average total cost. Long run: regular graphs apply to perfect competitions, monopolistic competition are different markets.

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Related Questions

30. Economies of scale refer to: 

a. the minimum point on the short-run average total cost curve.

b. the flat portion of the long-run average total cost curve.

c. a decrease in the long-run average total cost of production as output increases.

d. a and b.

 

31. With a natural monopoly, the price a single firm must charge to make a profit:

a. is lower than the price two or more firms would have to charge.

b. is always higher than the price two or more firms would have to charge.

c. is equal to the price of two or more firms would have to charge.

d. is half the price two or more firms would have to charge.

 

32. The long-run average cost curve is typically:

a. downward-sloping at first but then upward-sloping.

b. upward-sloping at first but then downward-sloping.

c. always downward-sloping.

d. always upward-sloping.

 

33. According to the contestable market model, if there are no barriers to entry or exit, the price an oligopolist sets will be equivalent to the competitive price. 
True or False?

 

34. In the theory of perfect competition:

a. the market demand curve is horizontal (i.e. elastic).

b. the single firm's demand curve is horizontal (i.e. elastic).

c. the single firm's demand curve is downward sloping.

d. a and b.

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.

1. A perfectly competitive firm will continue producing in the short run as long as it can cover its:

A.total cost.
B.average total cost.
C.average variable cost.
D.average fixed cost.

2. A perfectly competitive firm will earn a profit and will continue producing the profit-maximizing quantity of output in the short run if price is:
A.greater than marginal cost.
B.less than marginal cost.
C.less than average variable cost.
D.greater than average total cost.
3. Monopolistic competition is an industry characterized by:
A.a product with many close substitutes.
B.a horizontal demand curve.
C.a small number of firms.
D.barriers to entry and exit.
4. If a perfectly competitive firm increases production from 10 units to 11 units, and the market price is $20 per unit, total revenue for 10 units is:
A.$10.
B.$20
C.$200.
D.$210.
5. The demand curve facing a monopolist is:
A.horizontal, the same as that facing a perfectly competitive firm.
B.downward sloping, the same as that facing a perfectly competitive firm.
C.upward sloping, the same as that facing a perfectly competitive firm.
D.downward sloping, unlike the horizontal demand curve facing a perfectly competitive firm.
6. Suppose that a monopolist increases production from 10 units to 11 units. If the market price declines from $30 per unit to $29 per unit, marginal revenue for the eleventh unit is:
A.$1.
B.$9.
C.$19.
D.$29.
7. Most electric, gas, and water companies are examples of:
A.unregulated monopolies.
B.natural monopolies.
C.restricted-input monopolies.
D.sunk-cost monopolies.
8.If a perfectly competitive firm is producing a quantity that generates P > MC, then profit:
A.is maximized.
B.can be increased by increasing the price.
C.can be increased by decreasing the price.
D.can be increased by increasing production.