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(Solved by Expert Tutors) A consumer group conducted a study regarding the number of hours of


TV that teenagers watched per week. The cumulative frequencies of the sample were as follows.??Hours per week Cumulative Frequency?0-4 7?5-9 25?10-14 49?15-19 77?20-24 120The mean is 15.42What is the variance of the weekly hours of TV watcher? (These answers are rounded so choose the closest one to your figures.)a.) 6.3b.) 9c.) 40d.) 70e.) 85I know the answer is 40, please explain in detail how you got the answer.

 


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Apr 19, 2020

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