Factors for calculating three-sigma limits for the x-chart and R-chart Size of Sample Factor for UCL and LCL (n) for X-chart (A2) 2 1.880 3 1.023 4 0.729 5 0.577 6 0.483 7 0.419 8 0.373 9 0.337 10 0.308 Factor for LCL for R-Chart (D3) 0 0 0 0 0 0.076 0.136 0.184 0.223 Factor for UCL for R-Chart (0) 3.267 2.575 2.282 2.115 2.004 1.924 1.864 1.816 1.777 15 1 19 6 2 17 12 15 14 Sample 3 4 5 G 7 8 9 10 12 13 14 Mean 11 20 15 15 18 19 16 17 18 12 14 12 Range 5 9 10 14 13 56 11 11 7 10 12 Subsequent compies of ze 6 were taken from the process every week for the next to wooks. The times were monoured and the following results obtained Sample 16 17 18 20 21 22 23 24 25 Mean 13 17 12 18 20 22 16 25 23 21 Rango 9 12 7 5 13 15 12 11 9 7 Screen Shot 2021-06-10 6.12.06 PM Set up the x-chart by specifying the center line and three-sigma control limits below. (Enter your responses rounded to two decimal places.) X-chart Uch; LCL