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Can someone please explain to me how to complete 3-sigma control limits (upper and Lower) using Excel?  This is the question I am trying to answer: 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 = 57.75 lb., Average range R = 1.78 lb. a) For the given sample size, the control limits for 3-sigma x chart are: Upper Control Limit (UCL) = ____Ib (round your response to three decimal places)

Can someone please explain to me how to complete 3-sigma control limits (upper and Lower) using Excel?  This is the question I am trying to answer: 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 = 57.75 lb., Average range R = 1.78 lb. a) For the given sample size, the control limits for 3-sigma x chart are: Upper Control Limit (UCL) = ____Ib (round your response to three decimal places)

Practical Management Science
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
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Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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Can someone please explain to me how to complete 3-sigma control limits (upper and Lower) using Excel? 

This is the question I am trying to answer:

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 = 57.75 lb., Average range R = 1.78 lb.
a) For the given sample size, the control limits for 3-sigma x chart are:
Upper Control Limit (UCL) = ____Ib (round your response to three decimal places)

Sample Size, n 2 SS WN 3 4 56 7 80912 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 Lower Range, D3 0 0 0 0 0 0.076 0.136 0.184 0.223 0.284
Transcribed Image Text:Sample Size, n 2 SS WN 3 4 56 7 80912 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 Lower Range, D3 0 0 0 0 0 0.076 0.136 0.184 0.223 0.284
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HOW WOULD I CALCULATE THE UPPER/LOWER 3-SIGMA CONTROL LIMITS FOR R-CHART? HOW WOULD THAT CHANGE THE GIVEN FORMULA?

(UCLR) =_?__

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