1. Use the following information to answer.

1. Calculate each activity TE (estimated duration for each activity, rounding to the nearest integer).
2. Create a network activity diagram, its early start (ES), early finish (EF), late start (LS) and late finish (LF), and slack for each activity.
3. Identify the projects critical path.

Activity	Preceding activities	Best	Likely	Worst	TE
A	-	12	15	25
B	A	4	6	11
C	-	12	12	30
D	B, C	8	15	20
E	A	7	12	15
F	E	9	9	42
G	D, E	13	17	19
H	F	5	10	15
I	G	11	13	20
J	G, H	2	3	6
K	J, I	8	12	22