Table Q2: Project Activities Time Estimates (weeks)

Activity ID	Predecessor	Optimistic duration	Most likely duration	Pessimistic Duration
A	-	1	4	7
B	-	2	6	7
C	B	3	3	6
D	A	6	13	14
E	A,C	3	6	12
F	B	6	8	16
G	E,F	1	5	6

(a)Draw a network diagram (A-o-N) for the project showing ES, EF, LS, LF, and slack for each activity.

(b) Determine the critical path and the project completion time.

(c) What is the probability of completing the project within 23 weeks?