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C-Spec, Inc. is attempting to determine whether an existing machine is capable of milling an engine...

C-Spec, Inc. is attempting to determine whether an existing machine is capable of milling an engine part that has a key specification of 4 ± 0.02 inche. After a trial run on this machine, C-Spec has determined that the machine has a sample mean of 4.001 inches with a standard deviation of 0.020 inch.

a. Calculate the Cpk for this machine. (Round your answer to 3 decimal places.)

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

  • Yes

  • No

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Answer #1

Part A

The cpk is calculated on the basis of following formula,

Now,

Part B

No, here the cpk is in minimum.

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