Question

In: Statistics and Probability

A project has the following activities, precedence relationships, and time estimates in weeks: ​ Activity Immediate...

A project has the following activities, precedence relationships, and time estimates in weeks:

Activity

Immediate Predecessor

Activities

Optimistic

Time (to)

Most Likely Time (tm)

Pessimistic

Time (tp)

A

15

20

25

B

8

10

12

C

A

25

30

40

D

B

15

15

15

E

B

22

25

27

F

E

15

20

22

G

D

20

20

22

a.   Compute the expected time and variance for each activity.

b.   Determine the critical path and the expected duration of the project.

c.   What is the probability that the project will take longer than 56 weeks to complete?

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