Question: Spec Inc is attempting to determine whether an existing machine is capable of milling an engine part that has a key specification of 4 +-0.008.

Spec Inc is attempting to determine whether an

Spec Inc is attempting to determine whether an existing machine is capable of milling an engine part that has a key specification of 4 +-0.008. After a trial run on this machine, the company has determined that the machine has a sample mean of 4.002 inches with a standard deviation of 0.002 inch. Calculate the process capability index

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