The time in minutes to replace vehicle wiper blades at a service center was monitored using a mean and a range chart. Six samples of n=20 observations were obtained nd the sample means and ranges were compared.SampleMeanRange13.06.4223.15.5033.11.4143.13.4653.06.4663.09.45Using the factors in Table 10.3 in your text for 20 observations, determine the upper and lower limits for mean and range charts. Is the process within control limits?

A control chart is a graph which representing the relationship between a process and its timely…

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Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

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The time in minutes to replace vehicle wiper blades at a service center was monitored using a mean and a range chart. Six samples of n=20 observations were obtained nd the sample means and ranges were compared.

Sample	Mean	Range
1	3.06	.42
2	3.15	.50
3	3.11	.41
4	3.13	.46
5	3.06	.46
6	3.09	.45

Using the factors in Table 10.3 in your text for 20 observations, determine the upper and lower limits for mean and range charts. Is the process within control limits?

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