Refer to able 56.1 - Factors for Computing Control Chart Limits (3 sigma for this problem. Ross Hopkins is attempting to monitor a filling process that has an overall average of 725 ml. The average range R is 4 ml. For a sample size of 10, the control limits for 3-sigma x chart are: Upper Control Limit (UCL-) - ml (round your response to three decimal places). Lower Control Limit (LCL:) = mL (round your response to three decimal places). The control limits for the 3-sigma R-chart are: Upper Control Limit (UCLR) = ml (round your response to three decimal places). Lower Control Limit (LCLR) = ml (round your response to three decimal places). Definition Sample Size, n 2 3 4 5 6 7 8 9 10 12 Mean Factor, Az 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 0.076 0.136 0.184 0.223 0.284