Question 10 (3 points) Using the information provided in Table below, counting each person being served and the people in line, on average, how many customers would be in this system? (select the nearest answer) M/M/2 Mean Arrival Rate: 20 customers/hour Mean Service Rate: 12 customers/hour Number of Servers: 2 Server wage $10/hour Customer waiting cost $20/hour Probability of zero customers in system: 0.280Question 9-12 points) A post office has a single line for customers waiting for the next available postal clerk. There are two postal clerks who work at the same rate. The arrival rate of customers follows a Poisson distribution, while the service time follows an exponential distribution. The average arrival rate is three per minute and the average service rate is two per minute for each of the two clerks- What proportion of time are both clerks idle