lilly-hunter_60c0bb7669dd4
lilly-hunter_60c0bb7669dd4
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P(x|n) = nCx * p^(x) * (1-p)^(n-x) where C is the combination operator. P(x=3|n=64) = ( 64!/[(64-3)!3!]} * (0.04)^3 * (.96)^61 = 0.221 <= answer