4. Problem 8.29 The number of imperfections in bond paper produced by a paper mill isobserved over a period of several days. Table 8-28 shows the area inspected and thenumber of imperfections for 25 samples. Construct a control chart for the number ofimperfections per square meter. Revise the limits, if necessary, assuming special causes forthe out-of-control points.TABLE 8-28AreaAreaSampleInspected (m?)ImperfectionsSampleInspected (m²)Imperfections115061430082100815300123200516200641504171504250101820076.1001119150147150201004820052110089300102220010250102330012111002425071220042520051325012

Answered: Problem 8.29 The number of…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Hermitage DNA Labs, LLC collected temperature readings in an analysis process. The data can be found in the Problems Data Compute the mean and range of each sample and calculate control limits for x-bar and R charts using the appropriate From the charts constructed, does the process appear to be in statistical control?
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Chocolate, Inc. manufactures 4 ounce chocolate bars. Random samples of size four were taken and weighed. Eight hours of observation provided the following data. Sample Mean Range 1 3.96 0.13 2 4.03 0.16 3 3.97 0.16 4 4.14 0.16 5 3.88 0.11 6 4.03 0.18 7 4.04 0.18 8 4.07 0.14 (a) Determine the upper and lower control limits for the x chart. (Round your answers to four decimal places.) UCL=?? LCL=?? (b) Determine the upper and lower control limits for the R chart. (Round your answers to four decimal places.) UCL=?? LCL=??
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