Question: a) for the given sample size, the control limits for 3-sigma x chart are: Upper control limit= Lower control limit= b) the control limits for

a) for the given sample size, the control limitsa) for the given sample size, the control limits

a) for the given sample size, the control limits for 3-sigma x chart are: Upper control limit= Lower control limit=

b) the control limits for the 3-sigma r-chart are: upper control limit= lower control limit=

54.75 lb.; Thirty-five samples of size 7 each were taken from a fertilizer-bag-filling machine at Panos Kouvelis Lifelong Lawn Ltd. The results were: Overall mean = Average range R = 1.78 lb. Sample Size, n Lower Range, D3 2 0 3 0 4 0 5 Mean Factor, A2 1.880 1.023 0.729 0.577 0.483 0.419 0.373 0.337 0.308 0.266 Upper Range, D4 3.268 2.574 2.282 2.115 2.004 1.924 1.864 1.816 1.777 1.716 6 7 8 0 0 0.076 0.136 0.184 0.223 0.284 9 10 12

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