Question: According to a social mediablog, time spent on a certain social networking website has a mean of 16 minutes per visit. Assume that time spent

According to a social mediablog, time spent on a certain social networking website has a mean of 16 minutes per visit. Assume that time spent on the social networking site per visit is normally distributed and that the standard deviation is 7 minutes.

A. If you select a random sample of 25 sessions, what is the probability that the sample mean is between 15.5 and 16.5 minutes?

(Round to three decimal places asneeded.)

b. If you select a random sample of 25 sessions, what is the probability that the sample mean is between 15 and 16 minutes?

(Round to three decimal places asneeded.)

c. If you select a random sample of 144 sessions, what is the probability that the sample mean is between 15.5 and 16.5 minutes?

(Round to three decimal places asneeded.)

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