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Mathematics, 16.11.2020 18:10 katie673

A university with a high water bill is interested in estimating the mean amount of time that students spend in the shower each day. In a sample of 11 students, the average time was 4.94 minutes and the standard deviation was 1.27 minutes. Using this sample information, construct a 99% confidence interval for the mean amount of time that students spend in the shower each day. Assume normality. a. What is the lower limit of the 99% interval? Give your answer to three decimal places.
b. What is the upper limit of the 99% interval? Give your answer to three decimal places.

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