Question: The data shown in Table 6E 4 are the deviations from

The data shown in Table 6E.4 are the deviations from nominal diameter for holes drilled din a carbon-fiber composite material used in aerospace manufacturing. The values reported are deviations from nominal in ten-thousandths of an inch.
(a) Set up x and R charts on the process. Is the process in statistical control?
(b) Estimate the process standard deviation using the range method.
(c) If specifications are at nominal 100, what can you say about the capability of this process? Calculate the PCR Cp.

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