Activity
Immed
pred
Optim
time (a)
Most likely
time (m)
Pessim
time (b)
Expected
time
Variance
Standard
deviation
EST EFT LST LST Slack Critical?
A – 2 3 4 3.00 0.11 0.33 0.00 3.00 15.00 18.00 15.00 N
B – 5 6 10 6.50 0.69 0.83 0.00 6.50 11.50 18.00 11.50 N
C – 1 1 4 1.50 0.25 0.50 0.00 1.50 32.00 33.50 32.00 N
J D 1 2 6 2.50 0.69 0.83 9.50 12.00 25.50 28.00 16.00 N
K E 2 3 4 3.00 0.11 0.33 4.50 7.50 19.50 22.50 15.00 N
L F 3 4 8 4.50 0.69 0.83 10.50 15.00 22.00 26.50 11.50 N
M G 2 2 5 2.50 0.25 0.50 9.50 12.00 24.00 26.50 14.50 N
N I 8 9 10 9.00 0.11 0.33 19.50 28.50 19.50 28.50 0.00 Y
O I 1 1 4 1.50 0.25 0.50 19.50 21.00 29.50 31.00 10.00 N
P J 4 4 10 5.00 1.00 1.00 12.00 17.00 28.00 33.00 16.00 N
Q K 6 6 6 6.00 0.00 0.00 7.50 13.50 22.50 28.50 15.00 N
Problem 7-37(a)
Activity
Optim
time (a)
Most likely
time (m)
Pessim
time (b)
Expected
time
Variance
Standard
deviation
EST EFT LST LST Slack Critical?
A – 2 3 4 3.00 0.11 0.33 0.00 3.00 3.50 6.50 3.50 N
B – 5 6 10 6.50 0.69 0.83 0.00 6.50 0.00 6.50 0.00 Y
I D 9 10 11
0.00 0.00 0.00 0.00 0.00 8.00 8.00 8.00 N
J D 1 2 6 2.50 0.69 0.83 0.00 2.50 14.00 16.50 14.00 N
K E 2 3 4 3.00 0.11 0.33 4.50 7.50 8.00 11.00 3.50 N
L F 3 4 8 4.50 0.69 0.83 10.50 15.00 10.50 15.00 0.00 Y
Problem 7-37(b)
0.00 0.00 0.00 0.00 0.00 8.00 8.00 8.00 N