Reference no: EM132210354
Question 1
(a) Christine Phillips is in charge of planning and coordinating next spring's sales management training program for her company. Christine has listed the following activity information for this project:
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Activity
|
Activity Description
|
Immediate
Predecessors
|
Estimated
Duration
|
|
A
B
C
D
E
|
Select location
Obtain speakers
Make speaker travel plans
Prepare and mail brochure
Take reservations
|
-
-
A, B
A, B
D
|
2 weeks
3 weeks
2 weeks
2 weeks
3 weeks
|
Construct the project network for this project.
(b) Christine has done more detailed planning for this project and so now has the following expended activity list.
Construct the new project network.
Question 2
(I) Alfred Lowenstein is the president of the research division for Better Health, Inc., a major pharmaceutical company. His most important project coming up is the development of a new drug to combat AIDS. He has identified 10 groups in his division which will need to carry out different phases of this research and development project. Referring to the work to be done by the respective groups as activities A, B, ........, J, the precedence relationships for when these groups need to do their work are shown in the following project network.
| |
Duration
|
|
Activity
|
Estimated Mean
|
Estimated Variance
|
|
A
B
C
D
E
F
G
H
I
J
|
4 months
6 months
4 months
3 months
8 months
4 months
3 months
7 months
5 months
5 months
|
5 months
10 months
8 months
6 months
12 months
6 months
5 months
14 months
8 months
7 months
|
(a) Find earliest start, earliest finish, latest start and latest finish time for each activity of this project.
(b) Find the mean critical path for this project.
(c) Use this mean critical path to find the approximate probability that the project will be completed within 22 months.
(d) Now consider the other three paths through this project network. For each of these paths, find the approximate probability that the path will be completed with 22 months.