railway RRB JE (CBT I + CBT II) Mock Test 2024 Industrial Engineering Operations Research PERT and CPM
A PERT activity has an optimistic time estimate of 3 days, a pessimistic time estimate of 12 days, and a most likely time estimate of 9 days. What is the expected time of this activity?
1
5.0 days
2
7.5 days
3
8.0 days
4
8.5 days