The number of hours spent watching Netflix by students in the week before their final exams has
Question:
The number of hours spent watching Netflix by students in the week before their final exams has a normal distribution with a standard deviation of 5 hours. A random sample of 41 students was taken.
a. Is the probability more than 0.975 that the sample standard deviation exceeds 4 hours?
b. Is the probability more than 0.99 that the sample standard deviation is less than 6.5 hours?
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Related Book For 
Statistics For Business And Economics
ISBN: 9781292315034
9th Global Edition
Authors: Paul Newbold, William Carlson, Betty Thorne
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