and 5-3) to implement the stopping rule for this model differently. Get rid of the second two Variables and the non-default entries in the Entities per Arrival f eld and the Max Arrivals f eld in the “Create Call Arrivals” create module. Also get rid of the three modules in the “Arrival Cutoff Logical Entity” area. Put a Text box in your model to explain brief y what you’ve done to implement this. Note that the requested use of a nonstationary Poisson process here is only to “shut off” the arrivals at time 600 minutes and thus help in implementing the “f ush-out” stopping rule, and you won’t actually be changing the arrival rate during the f rst 600 minutes (and you’ll need to f gure out what that f at arrival rate is [in arrivals per hour , of course] to produce the same arrival probability distribution as in Model 5-1, with interarrival times being exponentially distributed with a mean of 0.857 minute). Explain in a second Text box in your model why the results are a little different from those produced by Model 5-1, and why this is okay. Look specif cally at two of the output performance measures (Number of Completed Calls and Average Total Time in System of Tech-Support Calls), and compare results from one replication each of Model