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Given the following Operating Characteristics from a queuing model with time units specified in hours, answer the five questions:

Po          = 0.2857

Lq          = 0.4960

L             = 1.6071

Wq        = 0.0496

W           = 0.1607

Pw         = 0.3968

  1. What is the probability that there are no customers in the system?
  2. What is the average time, in minutes, a customer spends waiting and being served?
  3. What is the average time, in minutes, a customer waits in line before being served?
  4. What is the average number of customers in the system?
  5. If the system serves a customer every 6 minutes, what is the service rate?