Question: Studies on a machine that molds plastic water pipe indicate that when it is injecting 29.87 mm diameter pipe, the process standard deviation is 0.93
Studies on a machine that molds plastic water pipe indicate that when it is injecting 29.87 mm diameter pipe, the process standard deviation is 0.93 mm. The pipe has a specification of 29.87 mm plus or minus 0.89 mm. What is the process capability index (Cp)?
a.
0.957
b.
0.638
c.
0.319
d.
0.1595
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