A software development project consists of six activities. The activities and their predecessor relationships are given in

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A software development project consists of six activities. The activities and their predecessor relationships are given in the following table. The worksheet Problem 20 in the Excel file Chapter 10 Problem Data provides a sample of times in weeks for activities A, B, E, and F from 40 past projects.

Activity

Activity Times

Predecessors

A

Requirement Analysis

See Excel File

None

B

Programming

See Excel file

A

C

Hardware

Constant 3 weeks

A

D

User Trainnig

Constant 12 weeks

A

E

Implementation

See Excel file

B, C

F

Testing

See Excel file

E

Assume that activity start time is zero if there are no predecessor activities. Fit distributions to the sample data and use Crystal Ball to find the mean project completion time, minimum and maximum project completion times, skewness of the completion time distribution, and probability of completing the project in 14, 15, 16, or 17 weeks.

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