Question: Studies on a machine that molds plastic water pipe indicate that when it is injecting 27.52 mm diameter pipe, the process standard deviation is 0.9

Studies on a machine that molds plastic water
Studies on a machine that molds plastic water pipe indicate that when it is injecting 27.52 mm diameter pipe, the process standard deviation is 0.9 mm. The pipe has a specification of 27.52 mm plus or minus 0.75 mm. What is the process capability index (Cp)? O a. 0.5556 O b. 0.1389 Oc. 0.8333 O d. 0.2778

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