Find the expected activity time compute the variance of

Question

Ross Hopkins, president of Hopkins Hospitality, has developed the tasks, durations, and predecessor relationships in the following table for building new motels

Activity	Time (weeks)			Immediate Predecessor(s)
	a               m           b
A	6	9	12
B	2	9	23	A
C	8	14	18	A
D	4	6	10	A
E	1	3	4	B
F	6	9	20	C, E

Activity
		Time (weeks)		Immediate Predecessor(s)
	a	m	b
G	3	3	4	C, E
H	1	1	1	F
I	7	7	7	F
J	4	8	14	D, G, H
K	3	3	4	I, J

A. Find the expected activity time

B. Compute the variance of activity complete time

C. What is the critical path

D. What is the estimated time for the critical path

E. What is the activity variance along the critical path

F. What is the probability of completing the project before week 36.