s 6 hours a day. If college students were randomly selected, find the probability that the mean number of hours they sleep during regular school days is longer than 7 hours. Assume that the variable is normally distributed with a standard deviation of 1.3 hours.

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Chapter1: Combinatorial Analysis
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3. It is reported that the average number of sleep of college students during regular school day
is 6 hours a day. If college students were randomly selected, find the probability that the mean
number of hours they sleep during regular school days is longer than 7 hours. Assume that the
variable is normally distributed with a standard deviation of 1.3 hours.
Transcribed Image Text:3. It is reported that the average number of sleep of college students during regular school day is 6 hours a day. If college students were randomly selected, find the probability that the mean number of hours they sleep during regular school days is longer than 7 hours. Assume that the variable is normally distributed with a standard deviation of 1.3 hours.
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