Question: Problem 6s.11ac Refer to Table 56.1 - Factors for Computing Control Chart Limits (3 sigma) for this problem. Twelve samples, each containing five parts, were

Problem 6s.11ac Refer to Table 56.1 - Factors for

Problem 6s.11ac 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: Sample 1 2 3 4 5 6 6 Sample Mean Range Sample Sample Mean (in.) Range (in.) (in.) (in.) 13.404 0.044 7 13.403 0.021 13.400 0.051 8 13.405 0.058 13.393 0.042 9 13.395 0.039 13.408 0.037 10 13.403 0.038 13.395 0.048 11 13.401 0.054 13.399 0.053 12 13.408 0.061 = For the given data, the x = 13.4012 inches (round your response to four decimal places). Based on the sampling done, the control limits for 3-sigma x chart are: - X Definition Upper Control Limit (UCL-) = 13.4275 inches (round your response to four decimal places) Lower Control Limit (LCL) - inches (round your response to four decimal places). Upper Range, Lower Range, D Sample Size, n 2 3 4 5 6 7 8 9 10 12 Mean Factor, A2 1.880 1.023 0.729 0.577 0.483 0.419 0.373 0.337 0.308 0.266 3.268 2.574 2.282 2.115 2.004 1.924 1.864 1.816 1.777 1.716 0 0 0 0 0 0.076 0.136 0.184 0.223 0.284

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