Explanation of Solution
Calculation of Expected Time (ET):
The ET is calculated using the following formula:
For Task A,
Substitute, “3” for “Optimistic time”, “7” for “Realistic time” and “11” for “Pessimistic time” in the equation 1.
Therefore, the expected time for task A is “7”.
For Task B,
Substitute, “5” for “Optimistic time”, “9” for “Realistic time” and “13” for “Pessimistic time” in the equation 1.
Therefore, the expected time for task B is “9”.
For Task C,
Substitute, “1” for “Optimistic time”, “2” for “Realistic time” and “9” for “Pessimistic time” in the equation 1.
Therefore, the expected time for task C is “3”.
For Task D,
Substitute, “2” for “Optimistic time”, “3” for “Realistic time” and “16” for “Pessimistic time” in the equation 1.
Therefore, the expected time for task D is “5”.
For Task E,
Substitute, “2” for “Optimistic time”, “4” for “Realistic time” and “18” for “Pessimistic time” in the equation 1.
Therefore, the expected time for task E is “6”.
For Task F,
Substitute, “3” for “Optimistic time”, “4” for “Realistic time” and “11” for “Pessimistic time” in the equation 1
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Essentials of Systems Analysis and Design (6th Edition)
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