Activity	a	m	b
(1-2)	2	2	8
(2-3)	1	1.5	11
(2-4)	0.5	1	7.5
(3-5)	1	2.5	7
(3-6)	1	2	3
(4-5)	6	7	8
(4-6)	3	4	11
(5-6)	4	6	8

A. Draw the network diagram.

B: Find the average expected time and variance of each activity.

C. Determine the critical path.

D. Formulate the project as a linear programming problem.

E. What is the probability that activity (1-2) will be completed in at most 2 days?

F. What is the probability that the entire project will be completed in 25 days or less?

G. When will the project be completed , if we are %95 sure it will be completed in the given specified time.