Exercise 3.12. Three players, Avinash, Brian and John, play the following game. Two cards, one red and the other black, are shuffled well and put face down on the table. Brian picks the top card, looks at it without showing it to the other players GAME THEORY - Giacomo Bonanno 124 (Avinash and John) and puts it back face down. Then Brian whispers either "Black" or "Red" in Avinash's ear, making sure that John doesn't hear. Avinash then tells John either "Black" or "Red". Finally John announces either "Black" or "Red" and this exciting game ends. The payoffs are as follows: if John's final announcement matches the true color of the card Brian looked at, then Brian and Avinash give $2 each to John. In every other case John gives $2 each to Brian and Avinash. (a) Represent this situation as an extensive-form game. (b) Write the corresponding strategic form (or normal form) assuming that the players are selfish, greedy and risk neutral.

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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Exercise 3.12. Three players, Avinash, Brian and John, play the following game.
Two cards, one red and the other black, are shuffled well and put face down on the
table. Brian picks the top card, looks at it without showing it to the other players
GAME THEORY - Giacomo Bonanno
124
(Avinash and John) and puts it back face down. Then Brian whispers either "Black"
or "Red" in Avinash's ear, making sure that John doesn't hear. Avinash then tells
John either "Black" or "Red". Finally John announces either "Black" or "Red" and
this exciting game ends. The payoffs are as follows: if John's final announcement
matches the true color of the card Brian looked at, then Brian and Avinash give $2
each to John. In every other case John gives $2 each to Brian and Avinash.
(a) Represent this situation as an extensive-form game.
(b) Write the corresponding strategic form (or normal form) assuming that the
players are selfish, greedy and risk neutral.
Transcribed Image Text:Exercise 3.12. Three players, Avinash, Brian and John, play the following game. Two cards, one red and the other black, are shuffled well and put face down on the table. Brian picks the top card, looks at it without showing it to the other players GAME THEORY - Giacomo Bonanno 124 (Avinash and John) and puts it back face down. Then Brian whispers either "Black" or "Red" in Avinash's ear, making sure that John doesn't hear. Avinash then tells John either "Black" or "Red". Finally John announces either "Black" or "Red" and this exciting game ends. The payoffs are as follows: if John's final announcement matches the true color of the card Brian looked at, then Brian and Avinash give $2 each to John. In every other case John gives $2 each to Brian and Avinash. (a) Represent this situation as an extensive-form game. (b) Write the corresponding strategic form (or normal form) assuming that the players are selfish, greedy and risk neutral.
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