A muffler manufacturer claims that the variance of its product is no more than 200. A random
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A muffler manufacturer claims that the variance of its product is no more than 200. A random sample of 25 mufflers has a sample variance of 391. Assuming a normal distribution, test the manufacturer’s claim at the 10 % level of significance.
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Related Book For
Statistics For Business And Financial Economics
ISBN: 9781461458975
3rd Edition
Authors: Cheng Few Lee , John C Lee , Alice C Lee
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