6) A small software development project has eight major activities. The times are estimated and provided in the table below: (10 points)

Activity	Optimistic Time	Most Likely Time	Pessimistic Time	Immediate Predecessor(s)
A	3	4	5	--
B	5	7	9	--
C	2	3	10	A
D	2	5	8	B
E	1	7	7	B
F	3	5	7	C, D
G	7	8	9	D, E
H	2	6	10	F

Answer the following questions based on above table 1-2 (show your work to get full credit):

1. Draw the network for all activities for software development. Also, Determine ES, EF, LS, LF, and slack for each activity (complete the network for all activities).
2. Determine the total project completion time and the critical path for software development. What is the project variance?
3. What is the probability that software development project will finish in 24 weeks or less?

Please show all work!