engineering recuitment Vizag Steel MT Mechanical 2020 Test Series Industrial Engineering Operations Research PERT and CPM
The variances of each activity in the critical path of a network are given by 4, 3, 2, 1, 3, 3 and 1. The variance of the entire critical path is:
1
17
2
7
3
\(\sqrt {\frac{{17}}{7}}\)
4
\(\sqrt {\frac{7}{{17}}} \)