Crackers: Boxes of crackers are filled by a machine. The weights of a random sample of 25

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Crackers: Boxes of crackers are filled by a machine. The weights of a random sample of 25 boxes of crackers have standard deviation s = 5 grams.

Assume the weights are normally distributed. Can you conclude that the population standard deviation is less than 10 grams? Use the α = 0.05 level of significance.

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Elementary Statistics

ISBN: 9781264136407

4th Edition

Authors: William Navidi , Barry Monk

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