Question: In the following table task durations are given in weeks. Use the information to answer the questions: Activity Predecessor Optimistic Normal Pessimistic Expected Time Variance

In the following table task durations are given in weeks. Use the information to answer the questions:

Activity

Predecessor

Optimistic

Normal

Pessimistic

Expected Time

Variance

A

None

2

4

6

B

None

3

5

9

C

A

4

5

7

D

A

4

6

10

E

B, C

4

5

7

F

D

3

4

8

G

E

3

5

8

Calculate the expected time and variance for each task

Draw the network and find the critical path and time

Find the probability that the critical path will be completed in 23 weeks

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