A PERT/CPM activity has an optimistic duration estimate of 3 days,a most likely duration estimate of 8 days,and a pessimistic duration estimate of 10 days.The expected duration of this activity t_e is: A)7.0 B)7.5 C)8.0 D)8.5 E)10.0

Question

Quizplus · Accepted Answer

The expected duration of an activity in PERT/CPM can be calculated using the formula: (optimistic time + 4 x most likely time + pessimistic time) / 6. 
Plugging in the values, we get: 
(3 + 4 x 8 + 10) / 6 = 7.5 
Therefore, the expected duration of this activity is 7.5 days. Option B is the correct answer.

A PERT/CPM Activity Has an Optimistic Duration Estimate of 3