Question: Measurements of a number of fittings show that the pitch diameter of the thread is normally distributed with a mean of 8.007 mm and a

Measurements of a number of fittings show that the pitch diameter of the thread is normally distributed with a mean of 8.007 mm and a standard deviation of 0.005 mm. The design specifications require that the pitch diameter be 8 ± 0.01 mm. Estimate the percentage of fittings that will be within tolerance.

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