Question: A college administrator would like to determine how much time students spend on homework each week. A questionnaire i sent to a sample of n=25 students and their responses indicate a sample of M = 7.4 hours, with a SS = 216.

a. Use the data to make a point estimate of the mean amount of homework for the entire student population.

b. Make an interval estimate of the population mean so that you are 90% confident the real mean is in the interval.