1. What are the estimated expected mean times in weeks for activities A-H? III.

Question

1. What are the estimated expected mean times in weeks for activities A-H?
III. to clarify a relationship wher BOTo A) I and II B) I and III C) I, II andII D) Il only II and III 4. Activity C has an early start time of 8, an early finish time of 12, a latest start time of 13, and a latest finish time of 17. Its slack is: A) 0 B)1 C)4 5 E) 9 5. A PERT/CPM activity has an optimistic time estimate of three days, a most likely time estimate of eight days, and a pessimistic time estimate of 7 days. The expected time of this activity is: 7.0 B) 7.5 C) 8.0 D) 8.5 E) 10.0 6. Wh which of the following variance of critical path D times en developing probabilistic estimates of project duration, it is necessary to know the mean and variance ofevery activity B) the mean and activities on the critical path C) the standard deviation of activities on the each activity's probability of completion E) the distribution of activity 7. The project management strategy of injecting additional resources in order to reduce the length of a project is called: A) expediting B) rushing C) panicking ) crashing E) none of the above Use the following to answer questions 8-15 (6 points each) EVENTS (NODES) TIMES (days) ACTIVITY START FINISH OPTIMISTIC MOST LIKELY PESSIMISTIC 27 15 21 13 35 26 29 20 29 12 35 51 35 20 19 14 8. What are the estimated expected (mean) times (in weeks) for activities A-H?

Explanation / Answer

Estimated expected mean times = (Optimistic + 4*Most Likely + Pessimistic)/6

A = (9 + 4*15 + 27)/6 = 16

B = (13 + 4*21 + 29)/6 = 21

C = (6 + 4*9 + 12)/6 = 9

D = (23 + 4*35 + 35)/6 = 33

E = (19 + 4*26 + 51)/6 = 29

F = (23 + 4*29 + 35)/6 = 29

G = (14 + 4*20 + 20)/6 = 19

H = (2 + 4*5 + 8)/6 = 5

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