Question 1142328: a) Describe the following terms as used in network analysis
i. Critical activity
ii. Super critical activity
iii. Float
iv. Sub-critical activity
b) R&D department is planning to bid on a large project for the development of a new communication system for commercial planes. The accompanying table shows the activities, times and sequences required.
Activity Preceding Activity Time in Days
Optimistic Most likely Pessimistic
Time Time Time
A
B
C
D
E
F
G
H
I
J
K -
-
-
A
B
C
D,E
B
H,F
G,I
J 6 6 24
6 12 18
12 12 30
6 6 6
12 30 48
12 30 42
18 30 54
17 29 47
14 28 48
14 28 48
6 6 24
Required:-
a) Draw a network to represent the above data
b) Determine the critical path of the project and the expected project length
c) Calculate the variance and standard deviation of the project
d) Compute the probability of completing the project within a period of 120 days
e) Suppose you want to shorten the completion time as much as possible and have the option of shortening any or all of B, C, D and G each by two days. Which would you shorten? What would be the new critical path?
Found 2 solutions by Alan3354, ikleyn:
Answer by Alan3354(69443)   (Show Source):
Answer by ikleyn(52818)  (Show Source):
You can put this solution on YOUR website! .
Let me remind you, very politely,
that the goal and the profile of this forum is to teach and to help School students in solving their Math problems.
Looking into your post, I do not see ANY connections between your problem (a) and the subjects of this forum.
Try to find another site/forum to satisfy your curiosity . . .
Have a nice day . . .
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