Question: 4. Let USL = Upper Specification Limit, LSL = Lower Specification Limit, X = Process mean, o = Process standard deviation. = = USL =

4. Let USL = Upper Specification Limit, LSL =

4. Let USL = Upper Specification Limit, LSL = Lower Specification Limit, X = Process mean, o = Process standard deviation. = = USL = 90 minutes, LSL = 50 minutes, X 1 = 74 minutes, 01 = 4.0 minutes Firm 1 X 2 = 72 minutes, 02 = 5.1 minutes Firm 2 = a. Find Cp b. Find Cpk Select the best Firm

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