A project has the following tasks and duration estimates given. These three tasks are done in succession on a project.   Task Optimistic Estimate Most Likely Estimate Pessimistic Estimate Alpha 30 days 40 days 50 days Beta 20 days 25 days 28 days Charlie 4 days 10 days 12 days Delta 25 days 30 days 50 days   What is the expected duration for the project? (3 points)       What is the variance for the project? (3 points)       What is the standard deviation of the project? (3 points)     What is the range of the duration of the project given 3 sigma? (3 points)

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
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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  1. A project has the following tasks and duration estimates given. These three tasks are done in succession on a project.

 

Task

Optimistic Estimate

Most Likely Estimate

Pessimistic Estimate

Alpha

30 days

40 days

50 days

Beta

20 days

25 days

28 days

Charlie

4 days

10 days

12 days

Delta

25 days

30 days

50 days

 

  1. What is the expected duration for the project? (3 points)

 

 

 

  1. What is the variance for the project? (3 points)

 

 

 

  1. What is the standard deviation of the project? (3 points)

 

 

  1. What is the range of the duration of the project given 3 sigma? (3 points)

 

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