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3. The Nero Match Company sells matchboxes that are supposed to have an average of 40 matches per box. A Random sample of 50 Nero matchboxes shows the average number of matches per box to be 43.1 with standard deviation 6. The population standard is 5.8. Using a 1% level of significance, test the claim that the average number of matches per box is more than 40

math   Statistics-And-Probability   
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Answer #1

the A i hpofhsis is Test satistie is 乙二43-1-40 乙二 3 3.78 but at 2-1, level , Zy-1.96 → The Avera-Do de matches Per box

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