Question:-
Estimated time Tc and variance of the activities ‘V’ on the critical path in a PERT network are given in the following table :
Activity Tc(days) V(days)
a 17 4
b 15 4
g 8 1
the probability of completing the project in 43 days is :
Option (A)
15.6%
Option (B)
50.0%
Option(C)
81.4%
Option(D)
90.0%
Correct Option:
(C)
Question Solution:
S.d = Ö(4+4+1) = 3
Z = {(X - `X)/ s} = ((43-40)/3) = 1
P(1) = 0.8413
question-answer-faq-8724