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 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.) 7 8 1 2 3 4 5 6 Sample Mean (in.) 13.800 13.804 13.793 13.804 13.797 13.801 0.033 0.041 0.034 0.051 0.031 0.036 9 10 11 13.803 13.807 13.793 13.803 13.801 13.808 0.041 0.034 0.027 0.029 0.039 0.047 12 For the given data, the x x= inches (round your response to four decimal places). i Definition X resp 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 Upper Range, D4 3.268 2.574 2.282 2.115 2.004 1.924 1.864 1.816 1.777 1.716 Lower Range, D3 0 0 0 0 0 0.076 0.136 0.184 0.223 0.284 Print Done