Question: Studies on a machine that molds plastic water pipe indicate that when it is injecting 28.09 mm diameter pipe, the process standard deviation is 0.46

Studies on a machine that molds plastic water pipe indicate that when it is injecting 28.09 mm diameter pipe, the process standard deviation is 0.46 mm. The pipe has a specification of 28.09 mm plus or minus 2.03 mm. What is the process capability index (Cp)? a. 4.413 b. 1.471 c. 2.942 d. 0.7355

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