The aircraft seam needs 28 rivets. Seam will have to be reworked if any of these rivets is defective. Assume rivets are defective independently of one another, each with the same probability.
If 24% of all seams need reworking, determine the probability that rivet is defective?
How small must probability of the defective rivet be to make sure that only 5% of all seams need reworking?