Activity

Predecessors

a

m

b

A

$2$

$5$

$8$

B

$6$

$7$

$8$

C

A

$1$

$2$

$3$

D

A$,$B

$6$

$7$

$8$

E

C

$2$

$5$

$8$

F

C

$1$

$2$

$9$

G

D$,$E

$4$

$5$

$12$

H

F$,$G

$2$

$3$

$4$

From the table above find the flowing answers.

$1.$ Construct the project Network

$2.$ Find the expected duration and Variance of each activity

$3.$ Find the critical path and expected project completion time

$4.$ What is the probability of completion the project on or before $22$ weeks?