Consider the information below for a given project, activity times are in days. Determine:

1. The probability of completing the project within 20 days
2. The probability of completing the project between 17 and 21 days
3. The probability of completing the project within 16 days
4. The number of days to complete the project within a probability of 95%

Activity	A	M	B	Immediate Predecessors
A	1	2	3	-
B	2	3	4	-
C	4	5	6	A
D	8	9	10	B
E	2	5	8	C,D
F	4	5	6	B
G	1	2	3	E