Practical Management Science
6th Edition
ISBN: 9781337406659
Author: WINSTON, Wayne L.
Publisher: Cengage,
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Question
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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- c) Total cost of crashing the project by 2 days = $_________ (Enter your response as an integer.)arrow_forwardPower Builders Inc. is planning for an upcoming job with a large client. They have listed the specific activities and steps to be performed, and estimated the time to complete each activity. The activities involved in the job are listed below: Activity Description of Activity Preceding Activity Estimated Time Required (in weeks) A B C D E F G H I J K Planning Meeting Obtain Permit Inspect Damage Begin Repair Work Order Additional Materials Apply for Waiver Obtain Waiver Complete Electrical Work Build Interior Partitions Onsite Testing Meet With Client -- A B A D E C, F D H G, I J 5 2 5 4 2 4 2 5 5 2 2 REQUIRED: Prepare a Gantt Chart from the facts in this time budget.arrow_forwardConsider a project that has the following tasks (with the duration measured in days): Task ID Duration Dependency A 3 14 C,F a) Draw the PERT chart for the above table. Be sure to include sequencing and identification for all tasks and events along with their time estimates. b) What is the critical path. c) What is the total expected duration time represented by the critical path. earrow_forward
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