Determine the upper control limit (UCL) and lower control limit (LCL) - 94947

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1.)Determine the upper control limit (UCL) and lower control limit (LCL) for an X-Bar chart if six samples of subgroup size 3 (n=3) were collected, the mean of the sample averages is 4.7, and the mean of the sample ranges is 0.35. Determine the upper control limit (UCL) and lower control limit (LCL) for an X-Bar chart. and 2.) Determine the upper control limit (UCL) and lower control limit (LCL) for an R-chart if twenty samples of subgroup size 5 (n=5) were collected for a variable measurement and the mean of the sample ranges equals 4.4.
Solution Description

Referring to the table at