Question: A partially solved PERT problem is detailed in the table below. Times are given in weeks. Activity Preceding Optimistic Time Probable Time Pessimistic Time Expected

A partially solved PERT problem is detailed in the table below. Times are given in weeks.

Activity Preceding Optimistic Time Probable Time Pessimistic Time Expected Time Variance
A -- 7 10 19
B A 2 2 8
C A 8 12 16
D A 3 5 10
E B 4 6 8
F B 6 8 10
G C, F 2 3 4
H D 2 2 8
I H 6 8 16
J G, I 4 6 14
K E, J 2 5 8

What is the probability of completion of the project before week 42?

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