Today, full time college students report spending a mean of 27
hours per week on academic activities, both inside and outside of
the classroom. Assume the standard deviation of time spent on
academic activities is 4 hours. If you select a random sample of 50
full-time college students:
A. Describe the shape of the sampling distribution. How do you
know it is this shape?
B. Find the mean and standard deviation for the distribution of
the sample mean (x bar) for a random sample of 50 full-time college
students.
C. What is the probability that the sample mean time spent on
academic activities is less than 27.5 hours per week?
D. What is the probability that the sample mean time spent on
academic activities is at least 26 hours per week?