2. The average length of time for students to register at a University at the College of Engineering has been 40 minutes with a standard deviation of 12 minutes. A new registration procedure using computers is being tried. If a random sample of 15 students had an average registration time of 36 min with a standard deviation of 8 minutes under the new svstem, test the hypothesis that the population mean is now less than 40 using at = 0.05. Determine the following: a.) Ho b.) H1 c.) t d.) critical region e.) decision