An immigration agent at Ataturk airport in Istanbul, Turkey on the average could process 120 entrants during an 8 hours shift, if she was busy all the time. The number of arrivals is based on Poisson distribution and the time to process each entrant is a random variable with an exponential distribution. On the average, an entrant arrives at her station once every six minutes.
A) Determine the expected time in the system. B) What is lambda? C) Determine probability that more than 3 will be in line?