What is the probability of completing this project within 25 weeks? Assume that the expected completion time is 26 weeks.

Optimistic, Most probable, and pessimistic Activity time Estimates (in Weeks)
Activity	Optimistic (a)	Most Probable (m)	Pessimistic (b)
A	4.00	7.00	12.00
B	1.00	2.00	5.00
C	2.00	4.00	7.00
D	3.00	5.00	11.00
E	2.00	4.00	6.00
F	1.50	3.00	5.00
G	1.50	4.00	4.50
H	2.50	4.00	7.50
I	1.50	3.00	3.50
J	1.00	2.00	3.00

Activity	Earliest Start (ES)	Latest Start (LS)	Earliest Finish  (EF)	Latest Finish (LF)
A	0	0	6	6
B	0	7	2	9
C	6	10	9	13
D	6	7	11	12
E	6	6	9	9
F	9	13	11	15
G	11	12	14	15
H	9	9	13	13
I	13	13	15	15
J	15	15	17	17