Question 1152820: A machine that manufactures automobiles parts produces defective parts 11% of the time.If 8 parts produced by this machine are randomly selected what is the probability that at least 3 parts are defective
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! what is probability 0,1,2 are defective? Then subtract that from 1 to get the answer.
for 0, probability is 0.89^8=0.3937
for 1, it is 8*0.11*0.89^7=0.3892 the 11 is from 8C1
for 2, it is 28*0.11^2*0.89^6=0.1684 the 28 is from 8C2
that sum is 0.8513
1-0.8513=0.1477, ANSWER
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