A project manager has developed the following data on a project tasks and duration. Please create an AON diagram, identify the critical path and the expected project duration. The customer has asked for a 95% confidence on the project completion date.Calculate the number of additional weeks the project manager needs to make that commitment.

		Time estimation in weeks
Task	Predecessor	optimistic	Most likely	Pessimistic
A		3	4	5
B	A	1	8	15
C	A	2	4	6
D	A	4	8	12
E	B	7	9	11
F	C,B	2	5	8
G	E,D	5	7	9
H	F,G	4	7	10