If a gambler rolls two dice and gets a sum of 10, he wins $10, and if he gets a sum of 4, he wins $20 and the cost to play the game is $5, what is the expectation?
Since the probability of rolling a sum of 10 is 8.3 percent, and the probability of rolling a sum of 4 is also 8.3 percent, the expectation is 10*.0083 + 20*.0083 - 5 which equals $11.23.
Answered by Christy W. -
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