Question: please show work 11) Activity Predecessors Expected Duration (in minutes) Variance of Duration (in minutes) A ---- 10 1.2 B A 5 1.00 C A

please show work

11)

Activity

Predecessors

Expected Duration (in minutes)

Variance of Duration (in minutes)

A

----

10

1.2

B

A

5

1.00

C

A

15

2.4

D

B, C

11

1.5

E

D

10

1.8

a). For the above projects find the expected duration and standard deviation of the project duration. (6points)

b. Based on your calculations from part a what is the probability that the project will be completed in 50 minutes. (4points)

c. How many minutes will the project be completed, if the company projects 90% probability for completion. (5points)

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