Problems Module 6

# Problems Module 6 - #2 A manufacturer is interested in...

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#2 A manufacturer is interested in determining whether it can claim that the boxes of detergent it sells contain, on average, more than 500 grams of detergent. From past experience the manufacturer knows that the amount of detergent in the boxes is approximately normally distributed. The firm selects a random sample of 100 boxes and records the amount of detergent (in grams) in each box. These data are provided in the file P10_02.xlsx . Formulate an appropriate hypothesis test and report a p -value. Do you find statistical support for the manufacturer’s claim? Explain. #4a A U.S. Navy recruiting center knows from past experience that the heights of its recruits are normally distributed with mean 68 inches. The recruiting center wants to test the claim that the average height of this year’s recruits is greater than 68 inches. To do this, recruiting personnel take a random sample of 64 recruits from this year and record their heights (in inches). The data are provided in the file P10_04.xlsx

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Problems Module 6 - #2 A manufacturer is interested in...

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