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A manufacturer produces F-22 fighter for Lockheed Martin. To test the reliability of the components the quality manager test a sample of 25 planes. Thesample

A manufacturer produces F-22 fighter for Lockheed Martin. To test the reliability of the components the quality manager test a sample of 25 planes. Thesample standard deviation of the lives of component is 10 hours and the sample mean of the

lives is found to be 200 hours.What is the 99% confidence interval estimate?

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