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Math Help - Statistics Probability Problem

  1. #1
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    Statistics Probability Problem

    1/3 of the population has type O+ blood. What is the probability that 2 out of 4 people will have type O+ blood? Please provide an explanation. Thanks!
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  2. #2
    Senior Member MaxJasper's Avatar
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    Re: Statistics Probability Problem

    P[x=2|p=1/3,n=4]=8/27

    Use binomial distribution.
    Thanks from clintonh0610
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