Refer to Table S6.1 - 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 Range (in.) Sample Sample Mean (in.) Range (in.) 1 7 8 2 3 Sample Mean (in.) 10.002 10.002 9.991 10.006 9.997 9.999 9 0.011 0.014 0.007 0.018 0.013 0.012 10.001 10.005 9.995 10.001 10.001 10.006 0.008 0.013 0.004 0.011 0.014 0.009 4 10 11 5 6 12 For the given data, the x = inches (round your response to four decimal places). Sample Size, n Lower Range, D3 AWN 2 3 0 0 4 0 5 0 Mean Factor, A 1.880 1.023 0.729 0.577 0.483 0.419 0.373 0.337 0.308 0.266 Upper Range, D4 3.268 2.574 2.282 2.115 2.004 1.924 1.864 1.816 1.777 1.716 6 7 8 0 0.076 0.136 0.184 0.223 0.284 9 10 12