In assigning a value for the most pessimistic (b) duration, the project manager should estimate the duration of the activity to have a 99% likelihood that it will take b or less amount of time.
a) true
b) false

The correct answer is True.

Explanation:

This type of practice is common to evaluate the conditions in the most pessimistic scenario. The 99% accuracy is fundamental to set the most pessimistic duration of a project, because it guarantees to have a high confidence interval to ensure that the actual duration will be equal or less than the most pessimistic duration.

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