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Capability Index

Please see attached. Please solve using Excel. Thanks.

1) 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 ± .003 inches. 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 .002 inch.
A. Calculate the (capability index) for this machine.
B. Should C-Spec use this machine to produce this part? Why?

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Solution Summary

This solution determines the capability index for a machine to see if it can meet certain specifications.