The table below describes the project X

	Predecessor	Duration	Variance
A	-	4	1.7
B	-	5	1.5
C	-	2	4.1
D	B	4	3.2
E	B	5	1.9
F	A	7	2.1
G	D, E, F	4	4.9
H	F, G	3	0.3
I	C	8	3
K	I	3	5.2

Based on the information provided, perform the following tasks:

1. Draw the AON network and identify the critical path and project duration
2. Calculate the probability of the project to be completed by Day 21