SOLUTION: A manufacturer knows that 11% of the products it produces are defective. Find the probability that among 4 randomly selected products, at least one of them is defective

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Question 1178839: A manufacturer knows that 11% of the products it produces are defective. Find the probability that among 4 randomly selected products, at least one of them is defective
Answer by ikleyn(52781) About Me  (Show Source):
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The probability that all 4 are good is  P = %281-0.11%29%5E4 = 0.89%5E4 = 0.6274   (rounded).



The probability that at least one is defective is the COMPLEMENT to it


    P' = 1 - 0.6274 = 0.3726.      ANSWER

Solved.