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5 answers
A certain game consists of rolling a single fair die. If a four or five comes up, you win 2 dollars; otherwise, you lose 1 dollars. Find the expected winnings for this game. Is this a fair game?
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Anonymous
its a 50/50 game. you win or lose equally depending on the roll and number of times certain numbers come up... Expect to probably break even in the long run..
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Anonymous
The probability of winning money is half compared to the probability of losing money. But since the amount received on winning is twice the amount lost on losing, it is a fair game.
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Anonymous
Expectation=$2(2/6)-$1(4/6)=0 Ans. it is fair.
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Anonymous
P(4,5) = 1/3 P(not 4,5) = 2/3 E = (1/3)(2) +(2/3)(-1) = 0 This is a fair game.
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Anonymous
50:50 yes
