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28. The earliest start time for step 2b2 is
A. 5 days.
b. 6 days.
c. 12 days.
d. 15 days.

29. The latest start time for step 2b2 is
A. 5 days.
b. 6 days.
c. 10 days.
d. 11 days.

30. If we don’t define the critical path for a process,
A. we can’t reduce defect levels effectively.
b. we may reduce cycle times of noncritical path activities, which won’t have as
much of an impact on total cycle time.
c. we may reduce cycle times of noncritical path activities, which will have no
impact on total cycle time.
d. All the above are true.

31. The advantage of a probabilistic approach to PERT analysis is that
A. it properly considers that processes are not deterministic.
b. it assumes that there is variation in activity times.
c. it could provide a more realistic estimate of project completion
times.
d. All the above are true.

32. If the optimistic, pessimistic, and most likely times for step 1 of a process are 2, 9,
and 5 days and for step 2 are 4, 13, and 8 days, then the best estimate for the

total cycle time for the two steps is
A. 13 days.
b. 13.34 days.
c. 8 days.
d. 22 days.

33. If the optimistic, pessimistic, and most likely times for step 1 of a process
are 2, 9, and 5, and for step 2 are 4, 13, and 8 days, then the best estimate
for the standard deviation of the total cycle time for the two steps is
A. 3.6 days.
b. 2.67 days.
c. 1.9 days.
d. 1.5 days.