Vehicles begin to arrive at a parking lot at 6: 00 a. m. at a rate 8 per minute. due to an
accident on the access highway, no vehicles arrive from 6: 20 to 6: 30 a. m. from 6: 30 a. m.
on, vehicles arrive at a rate of 2 per minute. the parking lot attendant processes incoming
vehicles (collects parking fees) at a rate of 4 per minute throughout the day. assuming
d/d/1 queuing, determine:

a. maximum queue
b. avg vehicle delay