An aircraft seam requires 25 rivets. The seam will have to be reworked ifany of these rivets is defective. Suppose rivets are defective independently of one another, each with the same probability.
a. If 15% of all seams need reworking, what is the probability that arivet is defective?b. How small should the probability of a defective rivet be toensure that only 10% of all seams need reworking?
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