MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Amy is studying the amount of sleep that college students get on class-nights. Earlier sleep research found that class-night sleep amounts for college students were normally distributed with a sample standard deviation of 0.6 hours. How many college students should Amy study if she wants to be 95% confident that the sample mean is within 0.25 hours of the population mean?
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