ECON101 Chapter Notes - Chapter 15: Normal-Form Game, Oligopoly, Nash Equilibrium

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lemonbeetle804

15 Jun 2018

School

University of Waterloo

Department

Economics

Course

ECON101

Professor

Wokia Kumase

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Chapter 15

Oligopoly: A market structure in which:

- Natural or legal barriers prevent entry of new firms

- A small number of firms compete

Natural Oligopoly: Where natural barriers to entry result from economies of scale

and demand (the efficient scale quantity for each firm is a large portion of total

quantity demanded at minimum ATC).

Duopoly: An oligopoly market with two firms.

Interdependence: When each fir’s actios ifluece the profits of all the other

firms.

Cartel: A group of firms acting together (colluding) to limit output, raise the price,

and increase economic profit.

Game Theory: A set of tools for studying strategic behaviour, behavior that takes

into account the expected behaviour of others and the recognition of mutual

interdependence. What is a game?

- Rules

- Strategies

- Payoffs

- Outcome

Strategies: In game theory, all the possible actions of each player.

Payoff Matrix: A table that shows the payoffs for every possible action by each

player for every possible action by each other player.

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ECON101 Full Course Notes

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Related Questions

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

1. Which of the following statements about oligopolies is not correct?

a.		Oligopolistic firms always charge the monopoly price.
b.		Oligopolistic firms are interdependent in a way that firms in perfect competition are not.
c.		An oligopolistic market has only a few sellers.
d.		The actions of any one seller can have a large impact on the profits of all other sellers.

2. Which is true of an oligopoly market that reaches a Nash equilibrium?

a.		The firms will not have behaved as profit maximizers.
b.		A firm will have chosen its best strategy, given the strategies chosen by other firms in the market.
c.		A firm will not take into account the strategies of competing firms.
d.		The market price will be different for each firm.

3. In game theory, what is a dominant strategy?

a.		the best strategy for a player to follow, regardless of the what strategies other players use
b.		a strategy that makes every player better off
c.		a strategy that must appear in every game
d.		the best strategy for a player to follow only if other players are cooperative

4. Which of the following situations produces the largest profits for oligopolists?

a.		The firms reach a Nash equilibrium.
b.		The firms combine to produce the monopoly output level.
c.		The firms set prices equal to marginal cost.
d.		The firms produce a quantity of output that lies between the competitive outcome and the monopoly outcome.

1. Which of the following statements about oligopolies is not correct?

a.		Oligopolistic firms always charge the monopoly price.
b.		Oligopolistic firms are interdependent in a way that firms in perfect competition are not.
c.		An oligopolistic market has only a few sellers.
d.		The actions of any one seller can have a large impact on the profits of all other sellers.

2. Which is true of an oligopoly market that reaches a Nash equilibrium?

a.		The firms will not have behaved as profit maximizers.
b.		A firm will have chosen its best strategy, given the strategies chosen by other firms in the market.
c.		A firm will not take into account the strategies of competing firms.
d.		The market price will be different for each firm.

3. In game theory, what is a dominant strategy?

a.		the best strategy for a player to follow, regardless of the what strategies other players use
b.		a strategy that makes every player better off
c.		a strategy that must appear in every game
d.		the best strategy for a player to follow only if other players are cooperative

4. Which of the following situations produces the largest profits for oligopolists?

a.		The firms reach a Nash equilibrium.
b.		The firms combine to produce the monopoly output level.
c.		The firms set prices equal to marginal cost.
d.		The firms produce a quantity of output that lies between the competitive outcome and the monopoly outcome.

ECON101 Chapter Notes - Chapter 15: Normal-Form Game, Oligopoly, Nash Equilibrium

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