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In a recent survey, the total sleep time per night among college students
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In a recent survey, the total sleep time per night among college students was approximately Normally distributed with mean u = 6.77 hours and standard deviation o = 1.27 hours. You plan to take an SRS of size n = 110 and compute the average total sleep time.
(a) What is the standard deviation for the average time?
(b) Use the 95 part of the 68-95-99.7 rule to describe the variability of this sample mean.
(c) What is the probability that your average will be below 6.9 hours?
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[Solved] In a recent survey, the total sleep time per night among college students
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- Submitted On 20 Jul, 2020 07:33:59
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