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A machine has four heads. Samples of n= 3 units are selected from each head, and the x and R values for an important quality characteristic are computed. The data are shown in the Table. Set up group control charts for this process. Interpret the charts. Sample No. 1 xbar 1 2 3 4 5 6 7 8 9 10 R 72 71 74 73 75 74 73 72 71 72 2 xbar 3 2 4 1 2 4 3 1 2 4 77 75 78 74 72 71 70 69 73 72 HEAD R 3 xbar R 2 1 2 4 3 1 2 1 3 2 72 75 71 70 74 73 77 72 71 70 4 xbar R 4 2 1 3 2 2 1 1 2 3 75 78 73 74 72 78 73 69 70 72 1 2 1 2 6 5 1 23 2

A machine has four heads. Samples of n= 3 units are selected from each head, and the x and R values for an important quality characteristic are computed. The data are shown in the Table. Set up group control charts for this process. Interpret the charts. Sample No. 1 xbar 1 2 3 4 5 6 7 8 9 10 R 72 71 74 73 75 74 73 72 71 72 2 xbar 3 2 4 1 2 4 3 1 2 4 77 75 78 74 72 71 70 69 73 72 HEAD R 3 xbar R 2 1 2 4 3 1 2 1 3 2 72 75 71 70 74 73 77 72 71 70 4 xbar R 4 2 1 3 2 2 1 1 2 3 75 78 73 74 72 78 73 69 70 72 1 2 1 2 6 5 1 23 2

Practical Management Science
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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A machine has four heads. Samples of n= 3 units are selected from each head, and the x and R values for an important quality characteristic are computed. The data are shown in the Table. Set up group control charts for this process. Interpret the charts. HEAD Sample No. 1 ла со ин 2 3 4 5 6 1899 10 1 xbar R 2 1 4 73 75 4 73 72 1 72 72 71 74 74 71 3 ANW 2 4 1 2 4 3 ANA W 1 2 4 2 xbar 7 75 78 74 72 71 70 69 73 72 77 R 212 4 3 1 NW N 3 2 3 xbar R NKNRF RENNR 72 75 71 70 74 73 77 72 71 70 WINA 4 2 1 3 2 2 WN P 1 1 2 3 4 xbar 75 78 73 74 72 78 73 69 70 72 R NW N NANA 1 2 1 2 6 5 1 2 3 2
Transcribed Image Text:A machine has four heads. Samples of n= 3 units are selected from each head, and the x and R values for an important quality characteristic are computed. The data are shown in the Table. Set up group control charts for this process. Interpret the charts. HEAD Sample No. 1 ла со ин 2 3 4 5 6 1899 10 1 xbar R 2 1 4 73 75 4 73 72 1 72 72 71 74 74 71 3 ANW 2 4 1 2 4 3 ANA W 1 2 4 2 xbar 7 75 78 74 72 71 70 69 73 72 77 R 212 4 3 1 NW N 3 2 3 xbar R NKNRF RENNR 72 75 71 70 74 73 77 72 71 70 WINA 4 2 1 3 2 2 WN P 1 1 2 3 4 xbar 75 78 73 74 72 78 73 69 70 72 R NW N NANA 1 2 1 2 6 5 1 2 3 2
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