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6 June, 11:22

The success rate of a freshman graduating at the same college they started at is 73%. For a group of 15 students, what is the probability that exactly 8 graduate? (round your answer to the nearest hundredth)

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  1. 6 June, 14:24
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    Probability of graduating is 73% = 0.73

    Probability of not graduating = 1-73% = 0.27

    Number of students (n) = 15

    Number of graduates (x) = 8

    Use the binomial probability formula:

    P (x) = (n/x) * p^x * (1-p) ^n-x

    P (8) = 15/8 * 0.73^8 * 0.27^7

    P (8) = 0.0543

    Rounded to nearest hundredth = 0.05
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