table Factors for Computing Control Chart Limits ( 3 sigma) for this problem. The overall average of a process you are attempting to monitor at Feryal Erhun Enterprises is 47 units. The average range is 3 units. The sample size you are using is n=6. a) What are the upper and lower control limits of the 3-sigma mean chart? Upper control limit (UCL_( bar(X))^(-))=units (round your response to three decimal places). Data Table {:[" Sample "],[" Size, "n]:} {:[" Mean Factor, "],[A_(2)]:} {:[" Upper Range, "],[D_(4)]:} {:[" Lower Range, "],[D_(3)]:} 2 1.880 3.268 0 3 1.023 2.574 0 4 0.729 2.282 0 5 0.577 2.115 0 6 0.483 2.004 0 7 0.419 1.924 0.076 8 0.373 1.864