Question 1 (10 points). Historic records show that the mean duration of an activity is expected to be 8 days with a standard deviation of 2.4 days.
a) What duration should be used in your schedule if you want to ensure 95% confidence that the activity’s duration will not be exceeded?
b) What it the probability that the duration will actually exceed 10 days?
Question 2 (10 points). Based on the network below, what are the probabilities (in percentages) of completing the project within the following durations:
a) 55 days?
b) 60 days?
c) 65 days?
B-14/20/40
D–17/25/55
F-8/12/20
C–10/15/20
E –10/14/20
G- 25/30/50
START Activity
TO / TM / TP
Question 3 (10 points). Based on the network below, what are the probabilities (in percentages) of completing the Critical Path within:
a) 24 days
b) 32 days
START Activity
B-2, 4, 6
D-5, 6, 7
H–1, 1, 1
C–2, 3, 10
E–2, 2, 8
G–1, 2, 3 FINISH
FINISH
J–2, 5, 8
F–6, 7, 8
I-5, 8, 17
K–1, 2, 9
L-1, 3, 11
TO, TM, TP
