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26 November, 10:02

What is the expected number of heads that come up when a fair coin is flipped 10 times?

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  1. 26 November, 10:03
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    This is a binomial distribution with a probability of success = 0.5 (fair coin).

    n=10

    so

    mean = E[x] = np = 10*0.5 = 5
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