Question: C-Spec, Inc., is making an engine part with a specific diameter. The customers specification is 4 .003 inches. After a trial run on its machine,

C-Spec, Inc., is making an engine part with a specific diameter. The customers specification is

4 .003 inches. After a trial run on its machine, C-Spec has determined that the machine has a sample mean of 4.001 inches with a standard deviation of .001 inch.

a. Calculate the Cpk for this machine.

b. Should C-Spec use this machine to produce this part? Why?

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