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A fair coin is tossed 5 times. what is the probability that it lands tails up exactly 3 times?

A fair coin is tossed 5 times. what is the probability that it lands tails up exactly 3 times?
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5 votes
A fair coin is tossed 5 times. what is the probability that it lands tails up exactly 3 times?

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User Jackbot
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1 Answer

4 votes
p(tail) =1/2 p( head) =1/2

5C3(1/2)^3 x (1/2)^2 = 0.313
answered
User David Johnstone
by
8.2k points
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