answer the first one you see

Answer the one i reposted

QUESTION 11 Car arrivals at a bank's drive-through follow a Poisson distribution with a rate of 16 cars per hour. The teller can serve up to 20 cars per hour and the service times follow a negative exponential distribution. A car has just arrived at the bank. How long is it expected to be in the system? a. 12 minutes e b. 15 minutes c. 4.5 minutes d. 7.5 minutes e, none of the above QUESTION 12 Machines in a 5-machine manufacturing facility can run an average of 150 minutes without requiring an adjustment. When an adjustment is needed it takes 50 minutes on average to do the adjustment. Currently, the factory employs 2 technicians. What is the average number of machines working properly at any time? 2.0.59 6.1.42 c. 3.58 d. 5.00 QUESTION 12 Machines in a smachine manufacturing facility can run an average of 150 minutes without requiring and ment. When an andere average to do the adjustment Currently, the factory employs 2 technicians. What is the average number of machine wong property 2.0.59 6.1.42 c.150 d. 5.00