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MathematicsMathematics
14 May, 14:57

The principal will randomly choose 6 students from a large school to represent the school in a newspaper photograph. the probability that a chose student is an athlete is 30%. (assume that this doesn't change) What is the probability that 4 athletes are chosen? ... ?

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  1. 14 May, 15:23
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    This is a binomial distribution. The probability of a binomial distribution is given by

    P = nCr * p^r * q^ (n-r)

    For this problem,

    n = 6

    r = 4

    p = 0.30

    q = 0.70

    P = 6C4 * 0.30^4 * 0.70^ (6-4)

    P = 5.95%
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