Question: Students arrive at a single computer terminal during on-line registration at the rate of 10 per hour. On average, the operator of terminal can process

Students arrive at a single computer terminal during on-line registration at the rate of 10 per hour. On average, the operator of terminal can process 20 per hour. Both rates follow a Poisson Distribution. What is the average waiting time for students before they can sit with the operator?

a. 6 minutes b. 5 minutes c. 3 minutes d. 1.2 minutes

Need formula with explanation. should involve lambda and mu.

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