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9 May, 01:34

You are playing a game in which a single die is rolled. if you roll a 2 or a 5, you win $36, otherwise you lose $36. What is the expected value of this game?

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  1. 9 May, 02:30
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    In rolling a single die, there are 6 possible outcomes. To win, there are two possible outcome making the probability equal to 2/6. Moreover to loss, there are 4 possible outcomes, making the probability equal to 4/6. Calculating the cost,

    (2/6) ($36) - (4/6) ($36) = - 12

    Thus, the expected value of the game is $-12.
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