A simulation model was developed in Section 9.7 to illustrate the problem with assuming activity times were known with certainty. However, in the simulation analy- sis, the activity times were assumed to be normally distributed. Do you have any concerns with assuming that the activity times were normally distributed? Redo the simulation analysis using a BetaPERT distribution with parameters of 7, 10, and 15 for the optimistic, most likely, and pessimistic times estimates. How do the results compare with the results obtained using a normal distribution?