a manufacturing machine has a 8% defect rate. if 5 items are chosen at random, what is the probability that at least one will have a defect

Answer 1

find P of 5 successes (100 %)
then subtract that from 1
p of success = .92

P of 5 in a row = .92^5 = .659
so probability that not all 5 work
= 1 - .659 = .341