Question: A project starting this summer has the following work breakdown structure: Time Estimates (days) Activity Precedes Optimistic Most Likely Pessimistic start A,B - - -

A project starting this summer has the following work breakdown structure:

Time Estimates (days)

Activity Precedes Optimistic Most Likely Pessimistic
start A,B - - -
A C,D 44 50 56
B D 45 60 75
C E 42 45 48
D F 31 40 49
E F 27 36 39
F end 58 70 82

What is the probability that this project will be completed within 155 days? It would be helpful to draw a network first.

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