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Name: An experiment has been conducted at a university to compare the mean n
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Description: An experiment has been conducted at a university to compare the mean number of study hours expended per week by student athletes with the mean number of hours expended by non-athletes. A random sample of 55 athletes produced a mean equal to 20.6 hour

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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An experiment has been conducted at a university to compare the mean number of study hours expended per week by student athletes with the mean number of hours expended by non-athletes. A random sample of 55 athletes produced a mean equal to 20.6 hours studied per week and a standard deviation equal to 5.8 hours. A second random sample of 200 non-athletes produced a mean equal to 23.5 hours per week and a standard deviation equal to 4.6 hours. How many students would need to be sampled in order to estimate the difference in means to within 1.5 hours with probability 95%?

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