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Solution) The Daugherty Porta-Vac project has an expected project completion time of 17 weeks. The probability

Question: The Daugherty Porta-Vac project has an expected project completion time of 17 weeks. The probability that the project could be completed in 20 weeks or less is 0.9656. The noncritical paths in the Porta-Vac project network are:

A-D-G-J

A-C-F-J

B-H-I-J

Table 12.5

Activity Expected Time (weeks) Variance
A 6 1.78
B 2 0.44
C 3 0.11
D 5 1.78
E 3 0.11
F 2 0.03
G 3 0.25
H 4 0.69
I 2 0.03
J 2 0.11
Total 32

A.) Use the information in Table 12.5 to compute the expected tiMeand variance for each path shown.

B.) Compute the probability that each path will be completed in the desired 20-week period.

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