The Stag Hunt Game - A group of 10 hunters are hunting, where the games include a stag and several (>10) hares. Each hunter can choose whether to hunt the stag or go after a hare. It takes the joint effort of all 10 players to catch the stag, but each hunter on their own is able to catch a hare. Suppose that a stag is worth $100 and a hare is worth $9. Suppose also that when all 10 players together catch the stag, they each get $10 after the game is sold. (a) Formulate this situation as a strategic game and find the Nash equilibria. (b) Now suppose that there are still 10 hunters, who need to choose to either hunt

Microeconomic Theory
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Chapter8: Game Theory
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The Stag Hunt Game - A group of 10 hunters are hunting, where the games include
a stag and several (>10) hares. Each hunter can choose whether to hunt the stag or
go after a hare. It takes the joint effort of all 10 players to catch the stag, but each
hunter on their own is able to catch a hare. Suppose that a stag is worth $100 and a
hare is worth $9. Suppose also that when all 10 players together catch the stag, they
each get $10 after the game is sold.
(a) Formulate this situation as a strategic game and find the Nash equilibria.
(b) Now suppose that there are still 10 hunters, who need to choose to either hunt
the stag or catch a hare. However, suppose that only 6 hunters are needed to
catch a stag. Assume further that after the stag is caught, it can still be sold for
$100 and the money shall be divided evenly among the hunters who have chosen
to join the stag hunt only. On the other hand, each hunter can always catch a
hare on their own and sell it for $9. Formulate this situation as a strategic game
and find the Nash equilibria. (Hint: when specifying the payoffs, you might find
it useful to look at action profiles where k hunters choose Stag, where k ≥ 6 or
k < 6.)
(c) Now suppose that the stag can only be sold for $60. What are the Nash equi-
libria?
Transcribed Image Text:The Stag Hunt Game - A group of 10 hunters are hunting, where the games include a stag and several (>10) hares. Each hunter can choose whether to hunt the stag or go after a hare. It takes the joint effort of all 10 players to catch the stag, but each hunter on their own is able to catch a hare. Suppose that a stag is worth $100 and a hare is worth $9. Suppose also that when all 10 players together catch the stag, they each get $10 after the game is sold. (a) Formulate this situation as a strategic game and find the Nash equilibria. (b) Now suppose that there are still 10 hunters, who need to choose to either hunt the stag or catch a hare. However, suppose that only 6 hunters are needed to catch a stag. Assume further that after the stag is caught, it can still be sold for $100 and the money shall be divided evenly among the hunters who have chosen to join the stag hunt only. On the other hand, each hunter can always catch a hare on their own and sell it for $9. Formulate this situation as a strategic game and find the Nash equilibria. (Hint: when specifying the payoffs, you might find it useful to look at action profiles where k hunters choose Stag, where k ≥ 6 or k < 6.) (c) Now suppose that the stag can only be sold for $60. What are the Nash equi- libria?
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