Sample Size, n Mean Factor, A2 Upper Range, D4 Lower Range, D AN Open 5 6 7 8 9 10 12 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 Print Done Refer to Table S Factors for Computing Control Chart Limits sigma for this problem Thirty-five samples of size 7 each were taken from a fertilizer-bag-filling machine. The results were: Overall mean = 54.75 lb : Average range R = 1.54 lb. a) For the given sample size, the control limits for 3-sigma x chart are: Upper Control Limit (UCLA) = b. (round your response to three decimal places). Lower Control Limit (LCL) = 16. (round your response to three decimal places). end sig b) The control limits for the 3-sigma R-chart are: Upper Control Limit (UCLR)=b (round your response to three decimal places). Lower Control Limit (LCLR)=b (round your response to three decimal places) sign