As part of a business process reengineering study, you collected the following times for calls received at your IT support desk. You would like to build a simulation to investigate bottlenecks and the return on investment of new technology. Your IT department has provided you with the following inter arrival times(in minutes). Using Crystal Ball or another statistical package, fit a continuous process distribution to the data for use in a simulation.
a. Using the Kolmogorov-Smirnov (K-S) or some other goodness-of-fit statistic, how confident can we be that this data behaves according to the hypothesized distribution?
b. Using histograms,* develop a DPG representative of this data.
c. Under what circumstances is using a DPG preferable to a CPG? Give an example.