Question: A project network is shown below. Activity Precedence Activities Optimistic Most Probable Pessimistic Time (weeks) A -- 1 5 10 B -- 2 4 8

A project network is shown below.

Activity

Precedence Activities

Optimistic Most Probable Pessimistic Time (weeks)

A

--

1 5 10

B

--

2 4 8

C

--

4 8 12

D

A, B

2 4 8

E

C

10 12 14

F

C

4 10 16

G

D, E

1 3 5

H

E

1 2 3

I

E, F

2 5 7

  • What is the expected completion time and variance for activity C?
A.

Expected completion time = 12, Variance = 1.333
B.

Expected completion time = 8, Variance = 1.333
C.

Expected completion time = 8, Variance = 1.778
D.

Expected completion time = 4, Variance = 1.778

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