Determine the upper and lower control limits of the r chart

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Reference no: EM1388863

Thirty five samples of size 7 each were taken from a fertilizer bag filling machine. The results were: Overall mean= 57.75 lb.; Average range= 1.78 lb. (a) Determine the upper and lower control limits of the x-bar chart. (b) Determine the upper and lower control limits of the R chart.

Reference no: EM1388863

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