SOLUTION: A study of 60 bolts of carpet showed that their average length was 150 yards. The standard deviation of the population is 10 yards. Which of the foloowing is the 99% confidence int
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Question 441929: A study of 60 bolts of carpet showed that their average length was 150 yards. The standard deviation of the population is 10 yards. Which of the foloowing is the 99% confidence interval for the mean length per bolt of carpet?
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Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A study of 60 bolts of carpet showed that their average length was 150 yards. The standard deviation of the population is 10 yards. Which of the following is the 99% confidence interval for the mean length per bolt of carpet?
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x-bar = 150
ME = 2.5758*10/sqrt(60) = 3.3254
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99% CI: 150-3.3254 < u < 150+3.3254
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Cheers,
Stan H.
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