A project manager working with her team has developed the following list of tasks and estimates of duration time.

Create a AON diagram, identify the critical path and calculate the expected project duration

Estimate the additional weeks she requires to be 95% confident of completion date

If the customer requests the project be delivered a week early, what is the chance that it can be done with the same resources?

Task	Predecessors	T optimistic	T Most Likely	T Pessimistic
A		3	4	5
B	A	4	8	15
C	A	2	4	6
D	A	4	8	12
E	B	7	9	14
F	C,B	2	5	8
G	E,D	5	7	12
H	F,G, I	4	7	10
I	D	3	6	9