Question: A process is monitored for flaws by taking a sample of size 70 each hour and counting the total number of flaws in the sample

A process is monitored for flaws by taking a sample of size 70 each hour and counting the total number of flaws in the sample items. The total number of flaws over the last 50 samples is 1085.

a. Compute the center line and upper and lower 3σ control limits.

b. The tenth sample had five flaws. Was the process out of control at that time? Explain.

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a The average number of defectives per sample is c 108550 217 The centerline is ... View full answer

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