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Reginald Brown, an Inspector from the Department of Weights and Measures

Question 74

Essay

Reginald Brown, an inspector from the Department of Weights and Measures, weighed 15 eighteen-ounce cereal boxes of corn flakes. He found their mean weight to be 17.8 ounces with a standard deviation of 0.4 ounces. At α = 0.01, are the cereal boxes lighter than they should be?

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blured image Critical value: -2.624
Test value: -1.9...

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