A manufacturer of cigarettes wishes to test the claim that the variance of the nicotine content of
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A manufacturer of cigarettes wishes to test the claim that the variance of the nicotine content of the cigarettes the company manufactures is equal to 0.638 milligram. The variance of a random sample of 25 cigarettes is 0.930 milligram. At α = 0.05, test the claim.
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Elementary Statistics A Step By Step Approach
ISBN: 9781259755330
10th Edition
Authors: Allan G. Bluman
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