Essay
A machine shop needs the diameter of the castings it purchases between 1.000 inch and 1.060 inches to insure that the surface finish will be acceptable.A large sample of castings found the mean diameter was 1.025 inches with a standard deviation of 0.008 inches.Calculate the process capability index.
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UTL is 1.060 inches LTL is 1.000 inches ...View Answer
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