1. Project Management
Ross L. Fink

2. PERT Time Modeling a=optimistic time m=most likely time
b=pessimistic time
ET = (a + 4m +b)/6
2 = ((b-a)/6)2

3. Probability of Meeting Due-Date
D=due-date
TE=expected completion date
=standard deviation of project completion time

4. Problems Associated with the use of PERT/CPM Models
Model limitations
Lack of distinctive tasks
Contingency tasks
Repeating tasks
Time estimates
Knowing all task before start
Worker availability

5. Problems Associated with the use of PERT/CPM Models
Human difficulties
Parkinson’s law--work expands to fill the time
Focus on critical path
Desire to be on or off of critical path
Sharing information