Suppose that when a coating process is in control an average of 12 blemishes occur per unit of output. Now suppose that a unit has been evaluated and found to have only one blemish. Which of the following statements is most appropriate?
A. The process was likely out of control when its average blemish rate was calculated.
B. The process was likely in control when this sample was taken.
C. The latest sample indicates a highly incapable process.
Expert Answer
A. The process was likely out of control when its average blemish rate was calculated.
If a unit was evaluated and found to
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