Question:-
For the network shown’ in the figure, the variance along the critical path is 4.

The probability of completion of the project in 24 days is
Option (A)
68.2%
Option (B)
84.1%
Option(C)
95.4%
Option(D)
97.7%
Correct Option:
(D)
Question Solution:

\ Variance = 4
s = ÖVar = Ö4 = 2
Z = {(X - `X)/2} = {(24-20)/2) = 2
Probability that completion of project in 24 days is
P(2) = 0.977 = 97.7%
question-answer-faq-8792