8. Refer to the extensive-form game of price competition shown below. (100, 100) Soft Entry Hard A (-10, 50)

Principles of Microeconomics
7th Edition
ISBN:9781305156050
Author:N. Gregory Mankiw
Publisher:N. Gregory Mankiw
Chapter17: Oligopoly
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Game Theory

8. Refer to the extensive-form game of price competition shown below.
(100, 100)
Soft
B
Entry
Hard
A
(-10, 50)
Stay Out
(0, 200)
Firm B is the incumbent facing potential entry from its rival, firm A. Firm A's strategies consist of {entry, stay
out}. Firm B's strategies are then {hard if entry; hard if stay out; soft if entry; soft if stay out}. Find the subgame
Nash equilibrium to this game, if one exists.
A. Firm A plays {stay out}; firm B plays {hard if entry}.
B. Firm A plays {entry}; firm B plays {hard if entry}.
C. Firm A plays {entry}; firm B plays {soft if entry}.
D. There is no subgame Nash equilibrium to this game.
Transcribed Image Text:8. Refer to the extensive-form game of price competition shown below. (100, 100) Soft B Entry Hard A (-10, 50) Stay Out (0, 200) Firm B is the incumbent facing potential entry from its rival, firm A. Firm A's strategies consist of {entry, stay out}. Firm B's strategies are then {hard if entry; hard if stay out; soft if entry; soft if stay out}. Find the subgame Nash equilibrium to this game, if one exists. A. Firm A plays {stay out}; firm B plays {hard if entry}. B. Firm A plays {entry}; firm B plays {hard if entry}. C. Firm A plays {entry}; firm B plays {soft if entry}. D. There is no subgame Nash equilibrium to this game.
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