Refer to the table Factors for Computing Control Chart Limits sigma) for this problem. The overall average of a process you are attempting to monitor at Feryal Erhun Enterprises is 41 units. The average range is 7 units. The sample size you are using is n=4. a) What are the upper and lower control limits of the 3-sigma mean chart? a) What are the upper and lower control limits of the 3-sigma mean chart? Upper control limit (UCLX) = 47.103 units (round your response to three decimal places). Lower control limit (LCL,) = 36.897 units (round your response to three decimal places). b) What are the upper and lower control limits of the 3-sigma range chart? Upper control limit (UCLR) = 15.97 units (round your response to two decimal places). Lower control limit (LCLR) = 0 units (round your response to two decimal places). - Data table Sample Size, n 2 3 4 5 6 Mean Factor, A2 1.880 1.023 0.729 0.577 0.483 Upper Range, D4 3.268 2.574 2.282 2.115 2.004 Lower Range, D3 0 0 0 0 0 NO 7 8 9 10 12 0.419 0.373 0.337 0.308 0.266 1.924 1.864 1.816 1.777 1.716 0.076 0.136 0.184 0.223 0.284 NO