Determine the upper and lower control limits of the x chart

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Reference no: EM131034712

Several samples of size 5 each were taken from a fertilizer-bag-filling machines. The results were: Overall mean x = 60lbs; Average range R=2 lbs.

(a) Determine the upper and lower control limits of the x chart. Please give the formulas for calculating UCL and LCL and at least one step of calculation for full credit.

(b) Determine the upper and lower control limits of the R chart. Please give the formulas for calculating UCL and LCL and at least one step of calculation for full credit.

Reference no: EM131034712

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