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PMI Project Management Professional Practice Question

Using PERT, if the optimistic time estimate is 4 days, the pessimistic time estimate is 12 days, and the most likely time estimate is 6 days, the expected duration of the activity is 6 days.

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Answer Description

This statement is false. The expected duration (TE) using PERT is calculated with the formula: TE = (Optimistic + 4 x Most Likely + Pessimistic) / 6. Using the given values, TE = (4 + 4 x 6 + 12) / 6 = 40 / 6 ≈ 6.67 days, not 6 days.

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