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Refer to Exercise Find the amount of sleep that is

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

In Exercise, 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?

In Exercise, 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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