Defect rate

A manufacturing machine has a 3% defect rate.

If 9 items are chosen randomly, what is the probability that at least one will have a defect?

Correct answer:

p =  0.2398

Step-by-step explanation:

r=3%=1003=0.03  p0=(09)r0(1r)90=(09)0.030(10.03)90=10.0300.9790.7602  p=1p0=10.7602=0.2398



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