You are working on the schedule for the system design phase and are trying to estimate the

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You are working on the schedule for the system design phase and are trying to estimate the duration of a complex design task. From breaking this task down into smaller tasks similar to ones that you’ve had experience with on other projects, you estimate the task should normally take an expected duration (ED) of three workdays, given a typical 75 percent worker efficiency rate and 15 percent interruption factor. But you also know of some instances where absolutely nothing went right, and it took up to two full workweeks,

or a pessimistic duration (PD) of 80 hours, to complete the design task. Using the classic technique, calculate the most likely duration of the task.

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Introduction To Systems Analysis And Design

ISBN: 9780073402949

1st Edition

Authors: Jeffrey Whitten, Lonnie Bentley

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