Find mixed-strategy equilibrium of rock-scissors-paper game

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Reference no: EM13873885

Many of you will be familiar with the children's game Rock-Scissors-Paper. In Rock-Scissors-Paper, two people simultaneously choose either "Rock," "Scis­ sors," or "Paper," usually by puttjng their hands into the shape of one of the three choices. The game is scored as follows. A person choosing Scissors beats a person choosing Paper (because scissors cut paper). A person choosing Paper beats a person choosing Rock (because paper covers rock) . A person choosing Rock beats a person choosing Scissors (because rock breaks scis­ sors). If two players choose the same object, they tie. Suppose that each indi­ vidual play of the game is worth 10 points. The following matrix shows the possible outcomes in the game:


PLAYER 2

Rock

Scissors

Paper

 

PLAYER 1

Rock

0

10

-10

Scissors

-10

0

10

Paper

10

-10

0

(a) Suppose that Player 2 announced that she would use a mixture in which her probability of choosing Rock would be 40%, her probability of choos­ ing Scissors would be 30%, and her probability of Paper, 30%. What is Player l's best response to this strategy choice of Player 2? Explain why your answer makes sense, given your knowledge of mixed strategies.

(b) Find the mixed-strategy equilibrium of this Rock-Scissors-Paper game.

Reference no: EM13873885

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