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

Refer to Table 56.1 - Factors for Computing

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 Emmanual Kodzi'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: Range Sample (in.) Sample Mean (in.) 14.704 14.702 14.689 14.708 14.697 14.701 0.033 0.041 0.034 0.051 0.031 0.036 Sample Sample Mean (in.) Range (in.) 14.703 0.041 14.705 0.034 14.695 0.027 14.703 0.029 14.701 0.039 14.708 0.047 12 For the given data, the x = 14.7013 inches (round your response to four decimal places). Based on the sampling done, the control limits for 3-sigma x chart are: Upper Control Limit (UCL;) = inches (round your response to four decimal places)

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