SOLUTION: A fair coin is flipped three times. Find the probability that it will come up heads at least twice?
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Question 539643: A fair coin is flipped three times. Find the probability that it will come up heads at least twice?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A fair coin is flipped three times. Find the probability that it will come up heads at least twice?
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P(x = 2 or x = 3) = 3C2(1/2)^3 + 3C3(1/2)^3 = 3/8 + 1/8 = 4/8 = 1/2
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Cheers,
Stan H.
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