Question: Refer to Table 86.1 - Factors for Computing Control Chart Limits (3 sigma) for this problom Twelve samples, each containing five parts, were taken from

Refer to Table 86.1 - Factors for Computing
Refer to Table 86.1 - Factors for Computing Control Chart Limits (3 sigma) for this problom Twelve samples, each containing five parts, were taken from a process that produces steel rods at Emmanual Kodz's factory. The length of each rod in the samples was determined. The results were tabulated and sample means and ranges were computed. The results were Sample 1 2 3 Sample Mean Rango (in.) (in.) 13.504 0.033 13.504 0.041 13.489 0.034 13.504 0.051 13.497 0.031 13.497 0.036 Sample Sample Moan (in.) Range (in.) 7 13.503 0.041 8 13.505 0.034 9 13.497 0.027 10 13.503 0.029 11 13.503 0.039 12 13.508 0.047 For the given data, the x = inches (round your response to four decimal places). X

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