sample Solution
Parameter Value   Parameter Value Value * 60 Value * 60 * 60
      Average server utilization 0.8667    
Arrival rate(lambda) 26.   Average number in the queue(Lq) 5.6333    
Service rate(mu) 30.   Average number in the system(Ls) 6.5    
Number of servers 1.   Average time in the queue(Wq) 0.2167 13. 780.
    Average time in the system(Ws) 0.25 15. 900.
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