1. Draw the project network 2. What is the expected time for activity B? 3. What is the variance for activity B? [

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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Q1: The project manager for a specific mechanical engineering project assigns 10
different activities to complete this project successfully. These activities have several
immediate predecessors as it shown in the table below
Most Likely
(Weeks)
Immediate
Optimistic
(Weeks)
Pessimistic
Activity
Description Predecessor(s)
(Weeks)
A
4
7
10
В
A
2
20
A
8.
12
16
D
B
1
3
E
D, C
6.
8
22
3
4
G
F
2
2
2
H.
F
8
10
I
E, G, H
4
8
12
1
2
3
Answer the following questions and show detailed calculations.
1. Draw the project network
2. What is the expected time for activity B? [!
3. What is the variance for activity B?
4. Based on the calculation of estimated times (expected duration), what is the critical
path?
5. What is the estimated time of the critical path?
6. What is the activity variance along the critical path?
7. Based on regular CPM calculations, what is the critical path?
8. What is the probability of completion of the project before week 42?
Transcribed Image Text:Q1: The project manager for a specific mechanical engineering project assigns 10 different activities to complete this project successfully. These activities have several immediate predecessors as it shown in the table below Most Likely (Weeks) Immediate Optimistic (Weeks) Pessimistic Activity Description Predecessor(s) (Weeks) A 4 7 10 В A 2 20 A 8. 12 16 D B 1 3 E D, C 6. 8 22 3 4 G F 2 2 2 H. F 8 10 I E, G, H 4 8 12 1 2 3 Answer the following questions and show detailed calculations. 1. Draw the project network 2. What is the expected time for activity B? [! 3. What is the variance for activity B? 4. Based on the calculation of estimated times (expected duration), what is the critical path? 5. What is the estimated time of the critical path? 6. What is the activity variance along the critical path? 7. Based on regular CPM calculations, what is the critical path? 8. What is the probability of completion of the project before week 42?
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