Question: Can someone explain the average expected waiting time in line or (Tq) portion of this. Number of tellers (server) m= 6 Interarrival time a 3

Can someone explain the "average expected waiting time in line" or (Tq) portion of this.

Can someone explain the "average expected waiting

Number of tellers (server) m= 6 Interarrival time a 3 minutes Std dev of interival time a=3 minutes Processing time p=15 minutes Std dev of processing time p=7 minutes SCV of Intearrival time CVa2=(a/a)2=1.00 SCV of processing time CVp2=(p/p)2=0.22 Utilization, u=p/(ma)=0.833 Average expected waiting time in line Tq=(p/m)(uv/2(m+1))]1/(1u)])(CVo2+CVp2)/2 =5.54 minutes L) Number of customers waiting in line Iq=Tq/a=1.85 Average time spent in the bank T=Tq+p=20.54 minutes

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