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A single server queuing system with a Poisson arrival rate and exponential service time has an average arrival rate of 11 customers per hour and

A single server queuing system with a Poisson arrival rate and exponential service time has an average arrival rate of 11 customers per hour and an average service rate of 14 customers per hour. What is the probability that a customer waits 3 minutes or more in the line?

a. 0.6763

b. 0.3237

c. 0.7857

d. 0.2143

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