Mathematics, 24.01.2020 03:31 xinkyx616
Using diaries for many weeks, a study on the lifestyles of visually impaired students was conducted. the students kept track of many lifestyle variables including how many hours of sleep obtained on a typical day. researchers found that visually impaired students averaged 8.65 hours of sleep, with a standard deviation of 1.93 hours. assume that the number of hours of sleep for these visually impaired students is normally distributed.
(a) what is the probability that a visually impaired student gets less than 6.2 hours of sleep?
(b) what is the probability that a visually impaired student gets between 6.8 and 10.93 hours of sleep?
(c) thirty percent of students get less than how many hours of sleep on a typical day?
hours
Answers: 1
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Using diaries for many weeks, a study on the lifestyles of visually impaired students was conducted....
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