Activity	Predecessor	a	m	b	Expected time	Variance
A	--	2	5	8
B	A	2	6	7
C	D	4	5	7
D	A	6	12	14
E	D	4	7	13
F	B,C	6	8	16
G	E,F	2	6	7

A project has the following activities, along with their estimate for completion.

a) calculate the expected time and variance for each activity

b) Draw the critical path diagram

c) Show the early start, the early finish times, the late start, and the late finish times

What is the critical path?

A. AG

B. ABFG

C. ADCFG

D. ADEG

E. None of these

What is the variance of the critical path?

A. 4.32

B. 5.75

C. 4.25

D. 6.5

E. None of these

What is the probability that the project can be completed in 34 weeks.

A. .7845

B. 22%

C. 78%

D. 34%

E. None of these