Mathematics, 13.07.2019 10:50 gamer67respress
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 8.14 hours of sleep, with a standard deviation of 1.78 hours. assume that the number of hours of sleep for these visually impaired students is normally distributed.
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Using diaries for many weeks, a study on the lifestyles of visually impaired students was conducted....
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