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Full-time college students report spending a mean of 28 hours per week on academic​ activities, both...

Full-time college students report spending a mean of 28 hours per week on academic​ activities, both inside and outside the classroom. Assume the standard deviation of time spent on academic activities is 6 hours. Complete parts​ (a) through​ (d) below.

If you select a random sample of 25 ​full-time college​ students, what is the probability that the mean time spent on academic activities is at least 27 hours per​ week?

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