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A class survey in a large class for first-year college students asked, \"About how many hours...

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Statistics

A class survey in a large class for first-year college studentsasked, \"About how many hours do you study in a typical week?\". Themean response of the 427 students was x¯¯¯ = 12 hours. Suppose thatwe know that the study time follows a Normal distribution withstandard deviation 7 hours in the population of all first-yearstudents at this university. What is the 99% confidence interval(±0.001) for the population mean?

Confidence interval is from ____to_____ hours.

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