The management of a busy petrol station is concerned that customers are being lost because of long waiting times sometimes required at their petrol pump Over of the arrival of ears and the length of time taken to serve customers at the petrol station. The tables below show the arrival rates and the service time distribution 25 points careful study has been o weeks period Inter arrival time Percentage of (minutes) - Service time Percentage of customers 10 Assuming that the petrol station has only one pump and only one member of staff attend the (a) Average inter arrival time late the wrival of the finitive customers and calculate the following: 1. Average service time 2. Average waiting time Use the random numbers given below for the simulation (Inter-amival: 11:29; 80:28:34) (Service: 48:21: 83; 63:91) Instruction Copy the Table and paste in your answer sheet to fill the answers