Question: C-Spec, Inc., is attempting to determine whether an existing machine is capable of producing a part that has a key specification of 4.50 .003 inches.

  1. C-Spec, Inc., is attempting to determine whether an existing machine is capable of producing a part that has a key specification of 4.50 .003 inches. After a trial run on this machine, C-Spec has determined that the machine has a sample mean of 4.502 inches with a standard deviation of .002 inch.
    1. Calculate the process capability index for this example.
    2. Determine the probability of producing a defect.
    3. Calculate the DPMO of the process.
    4. Is the process six sigma compliant?

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