The number of hours that a population sleeps daily has a normal distribution. From a random sample of 20 individuals from this population, a mean of 7.3 hours a day sleeping and a standard deviation of 0.6 hours were obtained. Find the 98% confidence interval for the mean number of hours per day that this population sleeps.

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The number of hours that a population sleeps daily has a normal distribution. From a random sample of 20 individuals from this population, a mean of 7.3 hours a day sleeping and a standard deviation of 0.6 hours were obtained. Find the 98% confidence interval for the mean number of hours per day that this population sleeps.

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