Question 222495: find the probability of tossing exactly 2 heads on 3 tosses of a fair coin.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! find the probability of tossing exactly 2 heads on 3 tosses of a fair coin.
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It's a binomial problem with n=3, p=1/2, x = 2
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P(x=2) = 3C2*(1/2)^2(1/2)
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P(x=2) = 3(1/4)(1/2)
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P(x=2) = 3/8
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Cheers,
Stan H.
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