This paper circulates around the core theme of Draw a path diagram for the project. 2. Calculate the expected length and variance of each task. Fill in the following worksheet. together with its essential aspects. It has been reviewed and purchased by the majority of students thus, this paper is rated 4.8 out of 5 points by the students. In addition to this, the price of this paper commences from £ 99. To get this paper written from the scratch, order this assignment now. 100% confidential, 100% plagiarism-free.
CPM/Pert analysis
The Cosmic project consists of 8 interdependent tasks, labeled A
through H. You’ve consulted experts, and have determined an optimistic,
likely and pessimistic completion time (in months) for each of the
tasks. The dependencies, and the times, are listed below.
Task
|
Precursor(s)
|
Optimistic
|
Likely
|
Pessimistic
|
A
|
(start)
|
1
|
3
|
5
|
B
|
(start)
|
2
|
4
|
7
|
C
|
A
|
4
|
7
|
9
|
D
|
A
|
1
|
4
|
5
|
E
|
A
|
3
|
5
|
6
|
F
|
D,E
|
1
|
2
|
4
|
G
|
B
|
3
|
8
|
10
|
H
|
C,F,G
|
1
|
2
|
4
|
(end)
|
H
|
|
|
|
1. Draw a path diagram for the project.
2. Calculate the expected length and variance of each task. Fill in the following worksheet.
Task
|
Optimistic (O)
|
Likely (L)
|
Pessimistic (P)
|
Expected Task
|
Task Variance
|
A
|
1
|
3
|
5
|
|
|
B
|
2
|
4
|
7
|
|
|
C
|
4
|
7
|
9
|
|
|
D
|
1
|
4
|
5
|
|
|
E
|
3
|
5
|
6
|
|
|
F
|
1
|
2
|
4
|
|
|
G
|
3
|
8
|
10
|
|
|
H
|
1
|
2
|
4
|
|
|
3. Use the following worksheet to determine the lengths of all
possible paths. Determine the critical path, its variance, and standard
deviation.
What is the critical path? What is its length?
Path
|
Expected Path
|
Path Variance
|
Path Standard Deviation
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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4. What is the probability of completing the project in 16 months? Show your intermediate results in the worksheet below.
Path
|
|
|
Target path
length ET
|
|
Cumulative probability of Z1
|
|
|
|
|
|
|
Note: (1) Determine from a Z-to-p table, or by using an online
converter; i.e., http://sampson.byu.edu/courses/z2p2z-calculator.html
The Magus Project consists of 12 interrelated tasks, A through L.
Their estimated normal completion times, normal costs, crash times and
crash costs are given below. (Times in weeks; costs in thousands of
dollars.)
Task
|
Predecessors
|
Normal Time
|
Normal Cost
|
Crash Time
|
Crash Cost
|
A
|
(start)
|
3
|
20
|
2
|
25
|
B
|
(start)
|
7
|
30
|
5
|
50
|
C
|
(start)
|
4
|
10
|
3
|
12
|
D
|
A,B
|
3
|
2
|
2
|
5
|
E
|
B,C
|
8
|
27
|
7
|
33
|
F
|
C
|
6
|
8
|
4
|
10
|
G
|
C
|
7
|
9
|
5
|
12
|
H
|
A
|
4
|
6
|
2
|
8
|
I
|
A,D
|
3
|
10
|
1
|
12
|
J
|
E
|
3
|
10
|
1
|
12
|
K
|
F,G
|
6
|
8
|
5
|
9
|
L
|
J,K
|
5
|
7
|
4
|
8
|
Use an online application (e.g., Sporkforge, 2014) to find the
critical path. Copy the output of the app into your upload as an image.
5. Which tasks are on the critical path?
6. What is the expected completion time of the project?
Instead of being finished in 7 weeks, task B requires 9 weeks.
7. Which (if any) tasks should be crashed, to make up the lost time? Why?
8. What is the additional cost of crashing the project?
Assignment Expectations
- For Part 1; Draw a PERT-CPM diagram clearly showing all the paths,
plus the critical path. You may draw the diagram by hand, and paste a
scanned image into your upload, but it must be totally legible.
- For Part 2; A PERT-CPM diagram is not required. Use an online app; paste an image of the app output into your paper.
- Show, and explain, all the calculations supporting your answers.
- Unambiguously state your answers.
General Case Expectations
- Follow the instructions in the BSBA Writing Style Guide (July 2014
edition), available online at
https://mytlc.trident.edu/files/Writing-Guide_Trident_2014.pdf.
- There are no guidelines concerning length. Write what you need to write – neither more, nor less.
- Clearly demonstrate your understanding of both the theory covered in the Module, and the particulars of the Case.
- Provide references and citations. At a minimum, you should reference
the course materials. These are referenced in APA format on the
Background Info page.