An electronic contractor is examining the amount of time his crews take to complete wiring jobs. Some crews take longer than others. For an upcoming job, a list of activities and their optimistic, most likely, and pessimistic completion times are given in the following table. Days Activity a m b Immediate Predecessors A 2 5 8 - B 1 3 5 - C 1 2 3 - D 5 6 7 C E 1 3 5 B, D F 5 9 13 A, E G 1 2 3 A, E H 2 5 8 F I 9 10 11 G J 13 15 20 G K 4 7 10 H, I
An electronic contractor is examining the amount of time his crews take to complete wiring jobs. Some crews take longer than others. For an upcoming job, a list of activities and their optimistic, most likely, and pessimistic completion times are given in the following table. Days Activity a m b Immediate Predecessors A 2 5 8 - B 1 3 5 - C 1 2 3 - D 5 6 7 C E 1 3 5 B, D F 5 9 13 A, E G 1 2 3 A, E H 2 5 8 F I 9 10 11 G J 13 15 20 G K 4 7 10 H, I
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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An electronic contractor is examining the amount of time his crews take to complete wiring jobs. Some crews take longer than others. For an upcoming job, a list of activities and their optimistic, most likely, and pessimistic completion times are given in the following table.
|
|
Days |
|
||
|
Activity |
a |
m |
b |
Immediate Predecessors |
|
A |
2 |
5 |
8 |
- |
|
B |
1 |
3 |
5 |
- |
|
C |
1 |
2 |
3 |
- |
|
D |
5 |
6 |
7 |
C |
|
E |
1 |
3 |
5 |
B, D |
|
F |
5 |
9 |
13 |
A, E |
|
G |
1 |
2 |
3 |
A, E |
|
H |
2 |
5 |
8 |
F |
|
I |
9 |
10 |
11 |
G |
|
J |
13 |
15 |
20 |
G |
|
K |
4 |
7 |
10 |
H, I |
Use excel to answer the following;
a) Develop a project network for this problem.
b) Determine the expected duration and variance for each activity.
c) Determine the EST, EFT, LST, LFT, and slack for each activity.
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