Question: A process is in statistical control with the process mean of 2 0 and S . D . of 1 . 2 . Tolerance ranges

A process is in statistical control with the process mean of 20 and S.D. of 1.2. Tolerance ranges are at LSL =16 and USL =24. Compute the process capability ratio or index assuming that the process mean has shifted to 1.5\sigma . Is the process capable? Explain why.

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