Question 21 (4 points) Interstate buses are required to go through a safety inspection center. Buses arrive at the center at the average rate of 80 an hour and the average service rate is 20 buses per hour per inspector. Currently there are five inspectors on duty. How many buses, on average, would you expect to see at the safety inspection center, including those being checked? 6.216 buses 3.2 buses 2.216 buses 7.2 buses Question 22 (4 points) Interstate buses are required to go through d'safety inspection center. Buses arrive at the center at the average rate of 80 an hour and the average service rate is 20 buses per hour per inspector. Currently there are five inspectors on duty If a bus was just arriving at the center, about how many minutes could the bus driver expect to be at the center? 4.662 minutes (approximately 0.0777 hour) 1.66 minutes (approximately 0.0276 hour) 5.4 minutes (0.09 hour) 2.4 minutes (0.04 hour)