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

statistics 
MathGuru,
Try a binomial probability table or use a binomial probability function, which is this:
P(x) = (nCx)(p^x)[q^(nx)]
x = 47
n = 50
p = .95
q = .05 (q is 1p)
I'll let you take it from here.