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A machining operation (Process A) produces small parts, 10% of which are defective. A similar operation (Process B) produces small but unrelated parts. Process B is considered to be in control if it produces no more than 10% defective units. Sampling for Process A consists of selecting 20 units at specific intervals. Sampling for Process B is similar with a sample size of 15 units.
1. Determine the probability of finding not more than 1 defective unit in a sample from Process A.
2. Determine the probability that Process B will be stopped needlessly when it is producing 5% defective units.
1. Determine the probability of finding not more than 1 defective unit in a sample from Process A.
2. Determine the probability that Process B will be stopped needlessly when it is producing 5% defective units.