Activity	Predecessor	Optimistic O	Most likely M	Pessimistic b
A	-	5	8	17
B	-	7	10	13
C	A	3	5	7
D	A	1	3	5
E	A, C	4	6	8
F	B, C	3	3	3
G	D, E	3	4	5

By using evaluating and reviewing the project (PERT) ?

1. What is the expected time to finish the project? And the project completion time variation?
2. If the contractor is liable to pay a penalty of $ 300,000 if the implementation of the project is delayed for more than a month from the expected completion time of the project, then what is the likelihood that the contractor will be obligated to pay the penalty?