3. A team of sociologists studied the leisure activities of 75 adults in a large region.
In the study, they found that the mean time these adults watched television was 4.8 hours per day, with a standard deviation of 2.1 hours per day.

A. Construct a 95% confidence interval for the mean number of hours per day of
TV for the adult population in this region.

b. State the meaning of the interval in the context of the problem.

50 points