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1. Monopolists can achieve any level of profit they desire because they have unlimited market power.
2. Even with market power, monopolists cannot achieve any level of profit they desire because they will sell lower
quantities at higher prices.
3. The three main sources of barriers to entry are monopoly resources, government regulation, and the firm’s production
process.
4. One characteristic of a monopoly market is that the product is virtually identical to products produced by competing
firms.
5. The fundamental cause of monopolies is barriers to entry.
6. The De Beers Diamond company advertises heavily to promote the sale of all diamonds, not just its own. This is
evidence that it has a monopoly position to some degree.
7. The De Beers Diamond company is not worried about differentiating its product from all other gemstones.
8. The amount of power that a monopoly has depends on whether there are close substitutes for its product.
9. If the ABC company owns the exclusive rights to mine land in Afghanistan for Lapis Lazuli, a rare stone used in
jewelry which is found only in Afghanistan, the company benefits from a barrier to entry.
10. Copyrights and patents are examples of barriers to entry that give firms monopoly pricing powers.
11. If the government deems a newly-invented drug to be truly original, the pharmaceutical company is given the
exclusive right to manufacture and sell the drug for 50 years.
12. A patent gives a single person or firm the exclusive right to sell some good or service forever.
13. A patent gives a single person or firm the exclusive right to sell some good or service for a specific period of time.
14. A natural monopoly has economies of scale for most if not all of its range of output.
15. If a product can be produced by a natural monopoly, society will benefit in the form of lower prices if the monopolist
is broken up into several smaller firms.
16. Declining average total cost with increased production is one of the defining characteristics of a natural monopoly.
17. Average revenue for a monopoly is the total revenue divided by the quantity produced.
18. For a monopoly, marginal revenue is often greater than the price it charges for its good.
19. When a monopolist increases the quantity that it sells, all else equal, total revenue increases, which is called the output
effect.
20. When a monopolist increases the quantity that it sells, price decreases, which, all else equal, decreases total revenue;
this is called the price effect.
21. A monopolist maximizes profit by producing an output level where marginal cost equals price.
22. A monopolist produces an output level where marginal revenue equals marginal cost and charges a price where
marginal cost equals average total cost.
23. Like competitive firms, monopolies choose to produce a quantity in which marginal revenue equals marginal cost.
24. Like competitive firms, monopolies charge a price equal to marginal cost.
25. A monopolist produces where P > MC = MR.
26. A monopolist produces where P = MC = MR.
27. During the life of a drug patent, the monopoly pharmaceutical firm maximizes profit by producing the quantity at
which marginal revenue equals marginal cost.
28. At the profit-maximizing quantity of output for a monopolist, average revenue, marginal revenue, and price are all
equal.
29. A monopolist’s profit is equal to (Price – Marginal Cost) × Quantity.
30. A monopolist does not have a supply curve because the firm’s decision about how much to supply is impossible to
separate from the demand curve it faces.
31. A monopolist’s supply curve is vertical.
32. A monopolist’s supply curve is horizontal.
33. The socially efficient quantity is found where the demand curve intersects the marginal cost curve.
34. The profit that a monopolist earns represents a loss to society that is measured through deadweight loss.
35. Deadweight loss measures the loss in society’s welfare that occurs because a monopolist does not produce the socially
efficient level of output.
36. Deadweight loss measures the loss in society’s welfare that occurs because a monopolist can earn profits without the
concern of new firms entering its industry.
37. The deadweight loss for a monopolist equals one-half of its profits for any given level of output.
38. In a monopoly market, the socially efficient quantity of output is typically higher than the profit-maximizing quantity
of output for the monopolist.
39. A monopoly creates a deadweight loss to society because it earns both short-run and long-run positive economic
profits.
40. A monopoly creates a deadweight loss to society because it produces less output than the socially efficient level.
41. Suppose a profit-maximizing monopolist faces a constant marginal cost of $10, produces an output level of 100 units,
and charges a price of $50. The socially efficient level of output is 200 units. Assume that the demand curve and marginal
revenue curve are the typical downward-sloping straight lines. The monopoly deadweight loss equals $4,000.
42. Suppose a profit-maximizing monopolist faces a constant marginal cost of $10, produces an output level of 100 units,
and charges a price of $50. The socially efficient level of output is 200 units. Assume that the demand curve and marginal
revenue curve are the typical downward-sloping straight lines. The monopoly deadweight loss equals $2,000.
43. Suppose a profit-maximizing monopolist faces a constant marginal cost of $20, produces an output level of 100 units,
and charges a price of $50. The socially efficient level of output is 200 units. Assume that the demand curve and marginal
revenue curve are the typical downward-sloping straight lines. The monopoly deadweight loss equals $1,500.
44. Goods that do not have close substitutes have downward-sloping demand curves.
45. Price discrimination can increase both the monopolist’s profits and society’s welfare.
46. In order for a firm to maximize profits through price discrimination, the firm must have some market power and be
able to prevent arbitrage.
47. Price discrimination is prohibited by antitrust laws.
48. A monopolist earns higher profits by charging one price than by practicing price discrimination.
49. By selling hardcover books to die-hard fans and paperback books to less enthusiastic readers, the publisher is able to
price discriminate and raise its profits.
50. Movie theatres charge different prices to different groups of people based on the differing marginal costs that exist
from group to group.
51. Airlines often separate their customers into business travelers and personal travelers by giving a discount to those
travelers who stay over a Saturday night.
52. University financial aid can be viewed as a type of price discrimination.
53. By offering lower prices to customers who buy a large quantity, a monopoly is price discriminating.
54. A monopolist that can practice perfect price discrimination will not impose a deadweight loss on society.
55. Antitrust laws give the Justice Department the authority to challenge potential mergers between companies in an effort
to safeguard society from monopoly power.
56. Some companies merge in order to lower costs through efficient joint production.
57. If the government regulates the price a natural monopolist can charge to be equal to the firm’s average total cost, the
firm has no incentive to reduce costs.
58. If the government regulates the price a natural monopolist can charge to be equal to the firm’s marginal cost, the
government will likely need to subsidize the firm.
59. The proper level of government intervention is unclear when dealing with a monopoly.
60. A common solution to monopoly in European countries is public ownership.
61. The best solution to the problem of welfare loss from monopoly is public ownership.
62. The government may choose to do nothing to reduce monopoly inefficiency because the “fix” may be worse than the
problem.
63. Government intervention always reduces monopoly deadweight loss.
64. Government intervention is always preferable to doing nothing when reducing the social inefficiencies of monopoly.
65. Firms with substantial monopoly power are quite common because many goods are unique.
66. Barriers to entry only exist for monopoly markets.
67. A monopolist is able to choose whatever price that it wishes and is only constrained by its greed.
68. The supply curve for a monopolist, in the short run, is defined in the same way as that for a competitive firm: it is the
portion of the marginal cost curve above average variable cost.
69. Monopolists can practice price discrimination in all monopoly markets.
70. As long as as a monopolist is able to control the resale of its product, then it can successfully practice price
discrimination.
71. A key for a monopoly that wants to practice price discrimination is to be able to control the resale of its product.
72. Since monopolists that practice price discrimination generally increase market output, compared to a monopoly that
charges a single price, practicing price discrimination generally leads to a smaller deadweight loss.
73. It is difficult in a natural monopoly market for the firm to achieve both efficiency and zero economic profit
simultaneously, even with regulation.
74. A natural monopoly will always operate in the region of the long run average total cost curve where the cost per unit is
constant.
75. The best option to control the behavior of a natural monopoly is to use public ownership of the monopoly.