statistics

A production process historically produces 95% items that are considered acceptable quality-wise and 5% that are defective.A sample of 50 items is taken. Determine the following probablities:
Probability that exactly 47 items will be good.

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  1. Try a binomial probability table or use a binomial probability function, which is this:

    P(x) = (nCx)(p^x)[q^(n-x)]
    x = 47
    n = 50
    p = .95
    q = .05 (q is 1-p)

    I'll let you take it from here.

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