A taxicab company operates one vehicle during the 9:00 A.M. to 5:00 P.M. period. The demand for taxi follows the distribution shown: Time between Calls (Minutes) 15 20 25 Probability 0.11 0.20 0.41 The distribution of time to complete a service is as follows: Service Time (Minute) 5 15 Probability 0.13 0.38 25 0.46 30 0.18 35 0.06 35 0.04 45 0.04 Using EXCEL simulate for 80 customers, calculate waiting times of the customers.