The given figure is a security model at an airport facility A single queue for all random screenings departure 1 random screener 1 -p A single queue for all passengers departure Security checkpoint 4 lanes The passenger arrival to the checkpoint is a Poisson distribution function. It averages 7.5 arrivals every minute. During this time 4 lanes are open. It takes an average of 0.5 minutes to go through each lane of the security checkpoint. It is exponentially distributed When every passenger has gone through the checkpoint, he has a 10% chance(p=10% in the picture) of being selected for random
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