Habitat for Humanity International is a nonprofit organization dedicated to eliminating poverty housing worldwide. Suppose the following table contains estimates of activity times (in days) involved in the construction of a house that Habitat for Humanity is building. Activity Optimistic Most Probable A 3 4.0 Pessimistic 5 B 7 8.0 9 C 6 6.5 10.5 D 6 8.0 9 E 5 6.0 8 F 5 6.0 7 (a) Compute the expected activity completion times and the variance for each activity. (Round your answers to two decimal places.) Activity Expected Times A B C D E F Variance (b) An analyst determined that the critical path consists of activities B-D-F. Compute the expected project completion time and the variance of this path. (Round your answers to two decimal places.) expected project completion time variance of projection completion time

Practical Management Science
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ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
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Habitat for Humanity International is a nonprofit organization dedicated to eliminating poverty housing worldwide. Suppose the following table contains estimates of activity times (in days) involved in the construction of a house that Habitat for Humanity is building.
Activity Optimistic Most Probable
A
3
4.0
Pessimistic
5
B
7
8.0
9
C
6
6.5
10.5
D
6
8.0
9
E
5
6.0
8
F
5
6.0
7
(a) Compute the expected activity completion times and the variance for each activity. (Round your answers to two decimal places.)
Activity
Expected
Times
A
B
C
D
E
F
Variance
(b) An analyst determined that the critical path consists of activities B-D-F. Compute the expected project completion time and the variance of this path. (Round your answers to two decimal places.)
expected project completion time
variance of projection completion time
Transcribed Image Text:Habitat for Humanity International is a nonprofit organization dedicated to eliminating poverty housing worldwide. Suppose the following table contains estimates of activity times (in days) involved in the construction of a house that Habitat for Humanity is building. Activity Optimistic Most Probable A 3 4.0 Pessimistic 5 B 7 8.0 9 C 6 6.5 10.5 D 6 8.0 9 E 5 6.0 8 F 5 6.0 7 (a) Compute the expected activity completion times and the variance for each activity. (Round your answers to two decimal places.) Activity Expected Times A B C D E F Variance (b) An analyst determined that the critical path consists of activities B-D-F. Compute the expected project completion time and the variance of this path. (Round your answers to two decimal places.) expected project completion time variance of projection completion time
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