6. (f) (3 points - Suggested completion time = 2 min) Determine the average number of

   patients waiting for service. Round the value to 3 decimal points if needed.

7. (g) (3 points - Suggested completion time = 2 min) Determine the average waiting time (in hours) of patients. Round the value to 3 decimal points if needed.

8. (h) (4 points - Suggested completion time = 4 min) In order to decrease the patients waiting time, the manager of the clinic considers hiring a part-time (PT) worker to help the health care team. While the new system would remain an M/M/1 waiting line, the addition of this PT worker, who would assist the patients in filling some of the basic paperwork, would result in an estimated increase of 5 customers per hour in the service rate. The cost of hiring the PT worker would be 1500 Dirhams per week. The manager estimates that there would be gains of 500 Dirhams per week in business for every minute of waiting time saved. Should the manager hire the PT worker? Justify your answer by showing your calculations.