Answered: The Road King Tire Company in…

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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Question

The Road King Tire Company in Birmingham wants to moni-
tor the quality of the tires it manufactures. Each day the com-
pany quality-control manager takes a sample of 100 tires, tests

them, and determines the number of defective tires. The re-
sults of 20 samples have been recorded as follows:Construct a p-chart for this process using 2 limits and for each of the last 30 weekdays are shown as follows:
describe the variation in the process.

Sample Defectives Sample Defectives
1 14 11 18
2 12 12 10
3 9 13 19
4 10 14 20
5 11 15 17
6 7 16 18
7 8 17 18
8 14 18 22
9 16 19 24
10 17 20 23

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