Discussion:
Q: The average length of time for students to register for classes at a certain college has been 50 minutes. A new registration procedure is being tried. A random sample of 12 students resulted in an average registration time of 42 minutes with a standard deviation of 11.9. Assume the distribution of registration times are normally distributed and test the hypothesis that the population mean with the new procedure is less than 50 minutes. Using a .05 level of significance.