19.) Please help and explain part E.

19. Patient Waiting Times. Suppose that the average waiting time for a patient at a physician's office is just over 29 minutes. To address the issue of long patient wait times, some physicians' offices are using wait- tracking systems to notify patients of expected wait times. Patients can adjust their arrival times based on this information and spend less time in waiting rooms. The following data show wait times (in minutes) for a sample of patients at offices that do not have a wait-tracking system and wait times for a sample of patients at offices with such systems. DATA file Patient Waits Without Wait-Tracking System With Wait-Tracking System 31 24 11 67 17 20 31 44 12 23 16 37 14 18 12 37 9 13 12 15 a. What are the mean and median patient wait times for offices with a wait-tracking system? What are the mean and median patient wait times for offices without a wait-tracking system? b. What are the variance and standard deviation of patient wait times for offices with a wait-tracking system? What are the variance and standard deviation of patient wait times for visits to offices without a wait-tracking system? c. Create a boxplot for patient wait times for offices without a wait-tracking system. d. Create a boxplot for patient wait times for offices with a wait-tracking system. e. Do offices with a wait-tracking system have shorter patient wait times than offices without a wait- tracking system? Explain