Dominant Strategies and Nash Equilibrium of a Game
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Dominant Strategies. Suppose two competitors each face important strategic decisions where the payoff to each decision depends upon the reactions of the competitor. Firm A can choose either row in the payoff matrix defined below, whereas firm B can choose either column. For firm A the choice is either "up" or "down;" for firm B the choice is either "left" or "right". notice that neither firm can unilaterally choose a given cell in the profit payoff matrix. The ultimate result of this one-shot, simultaneous-move game depends upon the choices made by both competitors. In this payoff matrix, strategic decisions made by firm A or firm B could signify decisions to offer a money-back guarantee, lower prices, offer free shipping, and so on. The first number in each cell is the profit payoff to firm A; the second number is the profit payoff to firm B.
Firm B
Firm A Competitive Strategy Left Right
UP $6million; $1Million $4million; $3.5Million
Down $2million; $2Million $3million; $3 million
A. Is there a dominant strategy for firm A? If so, what is it?
B. Is there a dominant strategy for firm B? If so, what is it?
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Solution Summary
This solution identifies and explains the Nash Equilibrium of this game.
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A. Is there a dominant strategy for Firm A? If so, what is it?
There is a dominant strategy for firm A: choosing up.
Because in the matrix, we find that A's ...
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