Question: Studies on a machine that molds plastic water pipe indicate that when it is injecting 29.99 mm diameter pipe, the process standard deviation is 0.82mm.
Studies on a machine that molds plastic water pipe indicate that when it is injecting 29.99 mm diameter pipe, the process standard deviation is 0.82mm. The pipe has a specification of 29.99mm plus or minus 2mm. What is the process capability index (Cp) ? a. 0.4065 b. 1.626 c. 0.813 d. 2.439
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