Question: Refer to Table $6.1 - Factors for Computing Control Chart Limits (3 sigma) for this problem. Twelve samples, each containing five parts, were taken from

Refer to Table $6.1 - Factors for Computing

Refer to Table $6.1 - 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 Sample Mean Sample Sample Mean (in.) Range (in.) 8 Range (in.) 0.044 0.051 0.042 0.037 0.048 0.053 12.902 12.900 12.891 12.906 12.895 12.901 9 12.901 12.905 12.893 12.903 12.903 12.906 0.021 0.058 0.039 0.038 0.054 0.061 10 11 5 12 For the given data, the X = 12.9005 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:) = Winches (round your response to four decimal places). i X Definition Sample Size, n Upper Range, D. 3.268 Lower Range, Dz 0 O 3 4 0 Mean Factor, Az 1.880 1.023 0.729 0.577 0.483 0.419 0.373 0.337 0.308 0.266 6 7 2.282 2.115 2.004 1.924 1.864 1.816 1.777 1.716 8 9 10 12 0 0.076 0.136 0.184 0.223 0.284 Print Done the IIAAL

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