Question: A process is in statistical control with x =20 and s =1.2. Specifications are at LSL = 16 and USL = 24. (a) Estimate the

A process is in statistical control with x =20 and s =1.2. Specifications are at LSL = 16 and USL = 24.
(a) Estimate the process capability with an appropriate process capability ratio.
(b) Items that are produced below the lower specification limit must be scrapped, while items that are above the upper specification limit can be reworked. What proportion of the process output is scrap, and what proportion is rework?

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