Question: Refer to Table 56.1 - Factors for Computing Control Chart Limits (3.sigma) for this problem. Twelve samples, each containing five parts, were taken from a

Refer to Table 56.1 - Factors for Computing Control Chart Limits (3.sigma) for this problem. Twelve samples, each containing five parts, were taken from a process that produces steel rods at Emmanuel Kodzi's factory. The length of each rod in the samples wat died. The results were tabulated and sample means and ranges were computed. The results were: Sample 1 2 3 4 5 6 Sample Mean (in.) 8.000 8.600 8.591 8.606 8.597 8.597 Range (in.) Sample 0.033 7 0.041 8 0.034 9 0.051 10 0.031 11 0.036 12 Sample Mean (in.) 8.603 8.603 8.595 8.601 8.601 8.606 Range (in.) 0.041 0.034 0.027 0.029 0.030 0.047 For the given data, the X - inches (round your response to four decimal places)

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