the amount of time spent by north american adults watching television per day has a mean of 6 hours and a standard deviation of 1.5 hours. a) what is the probability that a randomly selected north american adult watches television for more than 7 hours per day? b) what is the probability that the average time watching television by a random sample of 36 north american adults is more than 7 hours?

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04-11-2022
Mathematics

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the amount of time spent by north american adults watching television per day has a mean of 6 hours and a standard deviation of 1.5 hours. a) what is the probability that a randomly selected north american adult watches television for more than 7 hours per day? b) what is the probability that the average time watching television by a random sample of 36 north american adults is more than 7 hours?

Sagot :

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