A project has the following list of relevant activities and time estimates in weeks: Time Estimates (weeks) Likely 4 Activity Description Predecessors Optimistic 3 Pessimistic 11 A Contract signing None Questionnaire design Target market ID Survey Sample Develop presentation Analyze results Demographic analysis В A 8 A D В 8 12 20 E B 12 F D, C 2 7 G C 14 H Presentation to client E, F, G 1 2 4

Practical Management Science
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Author:WINSTON, Wayne L.
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Chapter2: Introduction To Spreadsheet Modeling
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Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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A project has the following list of relevant activities and time estimates in weeks:
Time Estimates (weeks)
Optimistic
3
Activity Description
Predecessors
Likely
Pessimistic
A
Contract signing
None
4
11
Questionnaire design
Target market ID
Survey Sample
Develop presentation
Analyze results
Demographic analysis
B
A
8
C
A
3
D
В
8
12
20
E
В
12
F
D, C
2
4
7
C
9
14
H.
Presentation to client
Е, F, G
4
a
Construct an A-O-A (Activity on Arrow) or network diagram.
b.
Determine t, for each activity, and Tg for each event.
Which path is the critical path.
с.
Compute the probability that the project will be completed within 28 weeks.
Compute the probability that the project will be completed within 32 weeks.
d.
е.
f.
Construct an A-O-N (Activity on Node) diagram.
g.
Using forward pass and backward pass calculate ES, EF, LS, LF and slack times for each activity.
h.
If Activity D is delayed 2 weeks and Activity E is delayed 3 weeks what will be the effect of these
delays to the project completion time? (What will be the project completion time in this case?)
Transcribed Image Text:Question A project has the following list of relevant activities and time estimates in weeks: Time Estimates (weeks) Optimistic 3 Activity Description Predecessors Likely Pessimistic A Contract signing None 4 11 Questionnaire design Target market ID Survey Sample Develop presentation Analyze results Demographic analysis B A 8 C A 3 D В 8 12 20 E В 12 F D, C 2 4 7 C 9 14 H. Presentation to client Е, F, G 4 a Construct an A-O-A (Activity on Arrow) or network diagram. b. Determine t, for each activity, and Tg for each event. Which path is the critical path. с. Compute the probability that the project will be completed within 28 weeks. Compute the probability that the project will be completed within 32 weeks. d. е. f. Construct an A-O-N (Activity on Node) diagram. g. Using forward pass and backward pass calculate ES, EF, LS, LF and slack times for each activity. h. If Activity D is delayed 2 weeks and Activity E is delayed 3 weeks what will be the effect of these delays to the project completion time? (What will be the project completion time in this case?)
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