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Business / Statistics for Business and Economics 12 / Chapter 13 / Problem 47E

Statistics for Business and Economics | 12th Edition | ISBN: 9780321826237 | Authors: James T. McClave, P. George Benson, Terry T Sincich

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Leaky process pumps. Quality (Feb. 2008) presented a

Chapter 13, Problem 47E

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QUESTION:

Leaky process pumps. Quality (Feb. 2008) presented a problem that actually occurred at a company that produces process pumps for a variety of industries. The company recently introduced a new pump model and immediately

began receiving customer complaints about “leaky pumps.” There were no complaints about the old pump model. For each of the first 13 weeks of production of the new pump, quality-control inspectors tested 500 randomly selected pumps for leaks. The results of the leak tests are summarized by week in the accompanying table. Construct an appropriate control chart for the data. What does the chart indicate about the stability of the process?

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QUESTION:

Leaky process pumps. Quality (Feb. 2008) presented a problem that actually occurred at a company that produces process pumps for a variety of industries. The company recently introduced a new pump model and immediately

began receiving customer complaints about “leaky pumps.” There were no complaints about the old pump model. For each of the first 13 weeks of production of the new pump, quality-control inspectors tested 500 randomly selected pumps for leaks. The results of the leak tests are summarized by week in the accompanying table. Construct an appropriate control chart for the data. What does the chart indicate about the stability of the process?

ANSWER:

Step 1 of 7

The following information is regarding to the each of the first 13 weeks of

production of the new pump, quality control inspectors tested 500 randomly selected

pumps for leaks.

The objective of the problem is to construct an appropriate control chart for the data.

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