Time spent using e-mail per session is normally distributed, with u=11 minutes and a= 3 minutes. Assume that the time spent per session is normally distributed. Complete parti (a) through (d). a. If you select a random sample of 50 sessions, what is the probability that the sample mean is between 10.8 and 11.2 minutes? 0.363 (Round to three decimal places as needed.) b. If you select a random sample of 50 sessions, what is the probability that the sample mean is between 10.5 and 11 minutes? O (Round to three decimal places as needed.)

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