Deck 13: Oligopoly and Strategic Behavior

Question 1

Which of the following is a characteristic of oligopoly?

A)Easy entry and exit
B)Many firms
C)Strategic dependence
D)None of the above

Answer 1

Strategic dependence

Question 2

Which of the following is NOT a necessary condition for oligopoly?

A)Barriers to entry
B)Strategic dependence of firms
C)Differentiated products
D)Either a small number of firms or market dominance by a small number of firms

Answer 2

Differentiated products

Question 3

Strategic behavior and game theory are features of which market structure?

A)Perfect competition
B)Monopoly
C)Monopolistic competition
D)Oligopoly

Answer 3

Oligopoly

Question 4

The most common reason for the existence of oligopolies is

A)ease of entry.
B)economies of scale.
C)diseconomies of scale.
D)advertising.

Question 5

Which of the following does NOT help explain why oligopolies exist?

A)Economies of scale
B)Mergers
C)Product homogeneity
D)Barriers to entry

Question 6

An oligopoly is a market situation in which

A)there are many firms producing differentiated products.
B)there is a single firm producing several varieties of a product.
C)all the sellers act independently of the others.
D)there are very few sellers and they recognize their strategic dependence on one another.

Question 7

Monopolies and oligopolies both erect barriers to entry through the use of

A)price cutting.
B)patents.
C)franchising.
D)advertising.

Question 8

When U.S.Steel,a steel producer,bought control of iron ore companies at the beginning of the 20th century,the company was initiating

A)a horizontal merger.
B)a vertical merger.
C)a cartel.
D)an expropriation.

Question 9

In an oligopolistic market,each firm

A)has a constant marginal cost.
B)faces a perfectly elastic demand function.
C)must consider the reaction of rival firms when making a pricing or output decision.
D)produces at minimum average cost in the long run.

Question 10

If a firm is an oligopolist,which is NOT true?

A)It must pay attention to other firms' prices.
B)It is one of a relatively small number of firms dominating its industry.
C)It can sell all the units it wants at the going market price.
D)It is engaged in a strategic game.

Question 11

Oligopolies can result from any of the following EXCEPT

A)economies of scale.
B)vertical mergers.
C)government regulation.
D)diseconomies of scale.

Question 12

The measurement of industry concentration which calculates the percentage of all sales contributed by a specific number of leading firms is called the

A)Herfindahl-Hirschman Index.
B)concentration ratio.
C)producer price index.
D)P/E ratio.

Question 13

Which of the following is NOT a common characteristic of oligopoly?

A)strategic dependence among firms in the industry
B)product differentiation
C)barriers to entry
D)marginal cost pricing.

Question 14

A merger between firms that are in the same industry is called a

A)conglomerate merger.
B)horizontal merger.
C)vertical merger.
D)none of the above.

Question 15

Managers in oligopoly firms must

A)eliminate any barriers to entry if they hope to make short-run profits.
B)advertise heavily in order to differentiate their product.
C)anticipate the reaction of rival firms.
D)establish many varieties of their products to cover the spectrum of consumer tastes.

Question 16

Which one of the following industries could be classified as an oligopoly?

A)Tobacco production
B)Retailing
C)Farming
D)Fast food restaurants

Question 17

Which of the following is NOT a characteristic of oligopoly firms?

A)Strategic dependence
B)Product differentiation
C)Non-price competition,such as advertising and promotions
D)Perfectly elastic demand curves

Question 18

In oligopoly,any action by one firm to change price,output,or quality causes

A)a reaction by other firms.
B)no reaction from the other firms.
C)a profit gain for the other firms.
D)loss of market share by the acting firm.

Question 19

Which of the following is most likely to be sold in an oligopoly market?

A)Pizza
B)Cell phone service
C)Electricity
D)Computer software

Question 20

A merger between firms in which one firm purchases an input from the other is called a

A)conglomerate merger.
B)horizontal merger.
C)vertical merger.
D)none of the above.

Question 21

Suppose a ten firm industry has total sales of $35 million per year.The largest firm have sales of $10 million,the third largest firm has sales of $4 million,and the fourth largest firm has sales of $2 million.If the rest of the industry has annual sales of $12 million,the second largest firm has sales of

A)$8 million.
B)$7 million.
C)$4 million.
D)none of the above.

Question 22

$$\begin{array} { c c c c } \text { Firm } & \text { Annual Sales } & \text { Firm } & \text { Annual Sales } \\\hline \text { A } & \$ 1000 & \text { G } & \$ 800 \\\text { B } & 900 & \text { H } & 1200 \\\text { C } & 120 & \text { I } & 1050 \\\text { D } & 75 & \text { J } & 90 \\\text { E } & 50 & \text { K } & 75 \\\text { F } & 40 & \text { L } & 600 \\\hline\end{array}$$

-According to the above table,if the fourth and fifth largest firms in the industry merge,the four-firm concentration ratio in the industry will be

A)82.5 percent.
B)35.8 percent.
C)69.0 percent.
D)84.1 percent.

Question 23

If the United States' largest bakery buys an agricultural firm that specializes in growing wheat,we would have an example of

A)a horizontal merger.
B)a vertical merger.
C)a monopoly.
D)excessive product differentiation.

Question 24

Suppose an industry has total sales of $25 million per year.The two largest firms have sales of $6 million each,the third largest firm has sales of $2 million,and the fourth largest firm has sales of $1 million.The four-firm concentration ratio for this industry is

A)36 percent.
B)60 percent.
C)50 percent.
D)25 percent.

Question 25

The industry concentration ratio measures the

A)value of the assets owned by the largest corporations in the market.
B)percentage of industry sales accounted for by the top four or eight firms.
C)difference between price and marginal cost for the largest firms in the industry.
D)degree of product differentiation in the market.

Question 26

The joining of firms that are producing or selling a similar product is

A)a conglomerate merger.
B)a horizontal merger.
C)a vertical merger.
D)always an illegal merger.

Question 27

Which of the following combinations would constitute a vertical merger?

A)General Motors and Bridgestone Tire Company
B)General Motors and Ford Motor Company
C)Philip Morris and RJ Reynolds
D)Philip Morris and Barnes & Nobles Booksellers

Question 28

$$\begin{array} { c c c c } \text { Firm } & \text { Annual Sales } & \text { Firm } & \text { Annual Sales } \\\hline \text { A } & \$ 1000 & \text { G } & \$ 800 \\\text { B } & 900 & \text { H } & 1200 \\\text { C } & 120 & \text { I } & 1050 \\\text { D } & 75 & \text { J } & 90 \\\text { E } & 50 & \text { K } & 75 \\\text { F } & 40 & \text { L } & 600 \\\hline\end{array}$$

-According to the above table,the four-firm concentration ratio of this industry is

A)69.2 percent.
B)35.1 percent.
C)66.7 percent.
D)67.5 percent.

Question 29

In general,horizontal mergers will

A)increase the number of firms in an industry.
B)decrease the number of firms in an industry.
C)increase competition in an industry.
D)reduce economic profits in an industry.

Question 30

Suppose that an industry consists of 100 firms,and the top 4 firms have annual sales of $1 million,$1.5 million,$2 million,and $2.5 million,respectively.If the entire industry has annual sales of $8.5 million,the four-firm concentration ratio is approximately

A)82 percent.
B)50 percent.
C)94 percent.
D)70 percent.

Question 31

A concentration ratio gives

A)the average size of the firms in an industry.
B)the total sales of four or eight of the mid-sized firms in the industry.
C)the percentage of all sales contributed by the four or eight largest firms in the industry.
D)the sales of the four largest firms in the industry divided by the sales of the eight largest firms in the industry.

Question 32

If industry sales are $2,000,and the top four firms have sales of $170,$140,$100,and $80,respectively,what will be the four-firm concentration ratio?

A)49 percent
B)24.5 percent
C)490 percent
D)200/49

Question 33

The combining of First Union National Bank and The National Bank of Memphis is an example of

A)a vertical merger.
B)a horizontal merger.
C)a downstream formation.
D)a conglomerate merger.

Question 34

A horizontal merger involves

A)the joining of two firms at different stages of the production process.
B)the separation of management from ownership.
C)the joining of two firms selling similar products.
D)the exchange of debt for stock.

Question 35

Suppose a ten firm industry has total sales of $35 million per year.The largest firm have sales of $10 million,the third largest firm has sales of $4 million,and the fourth largest firm has sales of $2 million.If fifth through tenth largest firms combined have annual sales of $12 million,the four-firm concentration ratio for this industry is

A)45.7 percent.
B)80 percent.
C)65.7 percent.
D)none of the above.

Question 36

Four-Firm Concentration Ratios $$\begin{array} { c c } \text { Industry } & \text { Ratio (percent) } \\\hline \text { W } & 72 \\\text { X } & 30 \\\text { Y } & 84 \\\text { Z } & 55\end{array}$$

-The most oligopolistic industry of those presented in the above table is likely to be industry

A)W.
B)X.
C)Y.
D)Z.

Question 37

If Ford Motor Company and General Motors Corporation were to merge,this would represent

A)a vertical merger.
B)a horizontal merger.
C)a cartel.
D)an up-and-down merger.

Question 38

As the definition of products narrows (i.e.,becomes more specific),the concentration ratio

A)is not valid.
B)tends to decrease.
C)tends to increase.
D)does not change in any predictable manner.

Question 39

Four-Firm Concentration Ratios $$\begin{array} { c c } \text { Industry } & \text { Ratio (percent) } \\\hline \text { W } & 72 \\\text { X } & 30 \\\text { Y } & 84 \\\text { Z } & 55\end{array}$$

-The most competitive industry of those presented in the above table is likely to be industry

A)W.
B)X.
C)Y.
D)Z.

Question 40

How do economies of scale contribute to the development of an oligopoly?

A)Economies of scale make it legally difficult for new firms to enter.
B)Economies of scale make small-scale producers inefficient.
C)Economies of scale are based on control of a key resource,without which other firms cannot enter an industry.
D)Economies of scale are guaranteed when a patent is granted.

Question 41

Vertical merger occurs when

A)two firms merge where one had sold its output to the other as an input.
B)the merger moves the combined firm onto the horizontal portion of its long-run average cost curve.
C)two firms merge where each is about the same size.
D)two firms producing a similar product merge.

Question 42

When managers in oligopolistic firms make decisions that affect output or price,they must

A)also be sure they erect barriers to entry to prevent new entrants from affecting their plans.
B)anticipate the reactions of their rivals and plan accordingly.
C)register with the Antitrust Division of the Department of Justice.
D)inform the regulators of their industry about their plans.

Question 43

Which of the following is an example of a vertical merger?

A)Northeastern Illinois University merging with McDonald's.
B)Northeastern Illinois University merging with a training academy for new professors.
C)Northeastern Illinois University merging with Roosevelt University.
D)Northeastern Illinois University going from a public to a private university.

Question 44

Which of the following is NOT a reason why some industries are oligopolies?

A)Economies of scale
B)Barriers to entry
C)Strategic independence
D)Mergers

Question 45

Which of the following is an example of a horizontal merger?

A)Northeastern Illinois University merging with McDonald's.
B)Northeastern Illinois University merging with a training academy for new professors.
C)Northeastern Illinois University merging with Roosevelt University.
D)Northeastern Illinois University going from a public to a private university.

Question 46

A situation in which one firm's actions with respect to price,quality,advertising and related changes may be strategically countered by the reactions of one or more other firms in the industry is known as

A)strategic dependence.
B)economies of scale.
C)the concentration ratio.
D)barriers to entry.

Question 47

All of the following are reasons for an oligopoly to occur EXCEPT

A)economies to scale.
B)barriers to entry.
C)independence among firms.
D)merger.

Question 48

There are 30 firms in an industry.What happens to that industry's four-firm concentration when the third- and fourth-largest firms merge?

A)Nothing,because their shares are already included in the concentration calculation.
B)The industry's concentration ratio will fall.
C)The industry's concentration ratio will increase.
D)It is impossible to know without more information.

Question 49

Horizontal merger occurs when

A)two firms merge where one had sold its output to the other as an input.
B)the merger moves the combined firm onto the horizontal portion of its long-run average cost curve.
C)two firms merge where each is about the same size.
D)two firms producing a similar product merge.

Question 50

Which of the following is true of an oligopoly?

A)They engage in nonprice competition.
B)They do not react to actions of their competitors.
C)Each firm produces a small portion of the total output.
D)Firms do not care what their competitors do.

Question 51

Oligopoly is a situation when there

A)is one firm in the industry that is fairly large.
B)are a few large firms in the industry.
C)are too many firms in the industry and there is excess capacity.
D)is one giant firm and many smaller firms forming a competitive fringe.

Question 52

Joe's hotdog stand merges with a company that supplies the condiments to Joe's.This is an example of

A)conglomerate merger.
B)concentration ratio.
C)vertical merger.
D)horizontal merger.

Question 53

The joining of a firm with another to which it sells an output or from which it buys an input is known as

A)a conglomerate merger.
B)a horizontal merger.
C)a vertical merger.
D)economies to scale.

Question 54

Which of the following is a characteristic of oligopoly?

A)Mutual firm independence
B)Zero economic profits in the short run
C)Marginal cost pricing
D)Only a few firms in the industry

Question 55

Which of the following is not true of an oligopoly?

A)They advertise their product.
B)The firms recognize their interdependence.
C)A few firm account for a large portion of the total output.
D)Firms are price takers.

Question 56

The joining of firms that are producing or selling a similar product is known as

A)a conglomerate merger.
B)a horizontal merger.
C)a vertical merger.
D)economies to scale.

Question 57

Straight Cut beauty salon merges with Clean-Cut beauty salon.This is an example of

A)conglomerate merger.
B)concentration ratio.
C)vertical merger.
D)horizontal merger.

Question 58

Over the past several decades,U.S.firms have faced more competition from overseas firms.Does this have any impact on the market power of U.S.oligopoly firms?

A)No,because domestic firms in oligopoly markets are always so dominant that overseas producers have little or no impact on those markets.
B)No,because the United States government has effectively blocked all imports that might compete with domestic firms in oligopoly industries.
C)Yes,competition from overseas firms can substantially limit domestic firms' market power.
D)There is no way to know.

Question 59

The existence of economies of scale is one reason oligopolies exist because

A)a firm is able to increase price leading to increased profits.
B)the marginal cost decreases as output increases.
C)of strategic dependence.
D)as output increases average total cost decreases leading to large-scale firms.

Question 60

The Herfindahl-Hirschman index is measured by

A)adding the market shares of all firms in an industry.
B)adding the squares of the market shares of all firms in an industry.
C)squaring the sum of the market shares of the all firms in an industry.
D)adding the market shares of the four largest firms in an industry.

Question 61

In a 50-firm industry,two of the smallest firms merge.Yet the 4-firm concentration ratio and the 8-firm concentration ratio did not change.All things considered,we can say that the industry has

A)moved closer to pure competition because the number of firms decreased.
B)moved farther away from competition because the number of firms decreased.
C)experienced no change in competition even though the number of firms decreased.
D)to be identified first; otherwise there is no way to tell.

Question 62

Which of the following statements about concentration ratios is correct?

A)A high concentration ratio indicates that the industry is a monopoly.
B)A high concentration ratio indicates that the industry is monopolistically competitive.
C)A high concentration ratio suggests that the industry is characterized by strategic independence.
D)A high concentration ratio suggests that the industry is characterized by strategic dependence.

Question 63

Between World War II and the 1970s,three firms-General Motors,Chrysler,and Ford-produced and sold nearly all the output of the U.S.auto industry.These three firms had

A)an oligopoly.
B)monopolistic competition.
C)colluded.
D)a pure monopoly.

Question 64

A market structure characterized by a small number of interdependent sellers is called a(n)

A)monopoly.
B)monopolistic competition.
C)monopsony.
D)oligopoly.

Question 65

There are fewer than half as many publishers of college textbooks in the United States now as a generation ago.Three companies alone account for almost two-thirds of the sale of new textbooks.This market situation characterized by very few sellers is known as

A)an oligopoly.
B)perfect competition.
C)pure monopoly.
D)monopolistic competition.

Question 66

A concentration ratio measures

A)the average size of the firms in the industry.
B)the sales of the three largest firms in the industry minus the costs of these three largest firms in the industry.
C)the share of industry sales accounted for by the largest firms in the industry.
D)the excess capacity found in a particular oligopolistic industry.

Question 67

The market power of a firm refers to its ability to

A)erect entry barriers in the industry.
B)make a profit even when other firms in the industry are making losses.
C)control its own output level while keeping its price the same as the prices charged by other firms.
D)affect the market price for its industry's output.

Question 68

Which of the following has the highest Herfindahl-Hirschman index?

A)monopoly
B)monopolistic competition
C)oligopoly
D)any of the above,depending on the size of firm sales

Question 69

The Herfindahl-Hirschman index is a measure of

A)the profit margin of an industry.
B)market size.
C)the degree of collusion among firms in a market.
D)the degree of concentration among firms in a market.

Question 70

$$\begin{array} { c c c c } \text { Firm } & \text { Annual Sales } & \text { Firm } & \text { Annual Sales } \\\hline \text { A } & \$ 1000 & \mathrm { G } & \$ 800 \\\text { B } & 800 & \mathrm { H } & 1500 \\\text { C } & 220 & \mathrm { I } & 1050 \\\text { D } & 75 & \mathrm {~J} & 90 \\\text { E } & 50 & \mathrm {~K} & 75 \\\text { F } & 40 & \mathrm {~L} & 300 \\\hline\end{array}$$

-Refer to the above table.The four-firm concentration ratio is

A)85.8 percent.
B)75 percent.
C)72.5 percent.
D)59.2 percent.

Question 71

$$\begin{array} { c c } \hline \text { Firm } & \begin{array} { c } \text { Annual Sales } \\\text { (\$ million) }\end{array} \\\hline 1 & 350 \\2 & 200 \\3 & 150 \\4 & 100 \\5 & 75 \\6 \text { through } 30 & 50 \\\text { Total } & 925 \\\hline\end{array}$$

-Refer to the above table.The four-firm concentration ratio is

A)86.5 percent.
B)33.3 percent.
C)13.3 percent.
D)11.6 percent.

Question 72

Industry X has four firms.The largest firm in Industry X has more than 90 percent of the market share.Industry Y also has four firms,but each of those four firms in Industry Y has 25 percent of the market share.The Herfindahl-Hirschman index will be

A)the same for both industries,but the four-firm concentration will be larger for Industry Y than Industry X.
B)the same for both industries,but the four-firm concentration will be larger for Industry X than Industry Y.
C)larger for Industry Y than Industry X,but the four-firm concentration will be the same.
D)larger for Industry X than Industry Y,but the four-firm concentration will be the same.

Question 73

Suppose there are four firms in an industry.The market shares of the four firms are 5 percent,20 percent,35 percent,and 40 percent.The Herfindahl-Hirschman index for that industry is

A)6,650.
B)3,250.
C)1,250.
D)100.

Question 74

Which of the following would be the best example of an oligopolistic industry?

A)agriculture
B)large aircraft manufacturing
C)confections
D)retail convenience stores

Question 75

The percentage of all sales contributed by the leading four or leading eight firms in an industry is known as

A)a horizontal merger.
B)a vertical merger.
C)economies to scale.
D)the concentration ratio.

Question 76

Which of the following is NOT a cause for an oligopoly to exist?

A)economies of scale
B)structural dependence
C)barriers to entry
D)horizontal mergers

Question 77

If a retail food chain merged with a meat packing company,this would be an example of a

A)horizontal merger.
B)conglomerate merger.
C)vertical merger.
D)diagonal merger.

Question 78

Suppose that Industry X has two firms with equal market shares,and Industry Y has three firms with 65 percent,30 percent,and 5 percent market shares,respectively.Which of the following is true?

A)The HHI for Industry X is 50 higher than the HHI for Industry Y.
B)The HHI for Industry X is 150 lower than the HHI for Industry Y.
C)The HHI for Industry X is 100 higher than the HHI for Industry Y.
D)The HHI is the same between Industry X and Industry Y.

Question 79

The recent merger of Southwest Bell (SBC)and AT&T companies is an example of a

A)horizontal merger.
B)vertical merger.
C)consolidation merger.
D)cooperative merger.

Question 80

A concentration ratio is used to

A)determine whether a market structure is oligopoly.
B)determine the importance of labor in the production process.
C)determine the degree of homogeneity in the market.
D)see if a firm qualifies for federal assistance.