Question 1 1.1. Green Valley Airport has been in operation forseveral years and is beginning to experience flight congestion. Astudy of airport operations revealed that planes arrive at anaverage rate of 12 per hour, with a Poisson distribution. On thesingle runway, a plane can land and be cleared every 4 minutes onaverage, and service times have a negative exponentialdistribution. Planes are processed on an FCFS basis, with takeoffsoccurring between landings. Planes waiting to land are asked tocircle the airport.
a. What is the expected number of airplanes circling theairport, waiting in queue for clearance to land?
b. What is the expected number
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