Refer to Exercise 8.54. Find the amount of sleep that is exceeded by only 25% of students.

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In exercise 8.54

University and college students average 7.2 hours of sleep per night, with a standard deviation of 40 minutes. If the amount of sleep is normally distributed, what proportion of university and college students sleep for more than 8 hours?

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Statistics For Management And Economics

ISBN: 9781337093453

11th Edition

Authors: Gerald Keller

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Question Posted: May 23, 2018 12:05 AM

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Refer to Exercise 8.54. Find the amount of sleep that is exceeded by only 25% of students.

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Statistics For Management And Economics

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