Question: . Your process has a normal histogram with mean located at 10 mm, 1s points at 9.9 and 10.1 mm, 2s points at 9.8 and

. Your process has a normal histogram with mean located at 10 mm, 1s points at 9.9 and 10.1 mm, 2s points at 9.8 and 10.2 mm, and 3s points at 9.7 and 10.3 mm.

If your customer will accept parts measuring between 9.7 and 10.3 mm, how many parts of every 1,000 produced would you expect to scrap? What would have to be done to bring the scrap rate down to what it had been at the former customer specification?

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