An activity on a PERT network has these time estimates: optimistic = 3, most likely = 5, and pessimistic = 10. What is its expected activity time?
A) 5.00
B) 5.50
C) 6.00
D) 3.00
E) 33.00

Question

Quizplus · Accepted Answer

To calculate the expected activity time using PERT, we use the formula:
(Estimated time for pessimistic + 4 x Estimated time for most likely + Estimated time for optimistic) ÷ 6
Plugging in the values, we get:
(10 + 4(5) + 3) ÷ 6 = 5.5
Therefore, the expected activity time is 5.5, which is closest to option B (5.50).

An Activity on a PERT Network Has These Time Estimates