When Using the Beta Probability Distribution to Estimate Activity Times

question 33

Multiple Choice

When using the beta probability distribution to estimate activity times, which of the following statements is TRUE?

• A) The use of most optimistic, most likely, and most pessimistic times for an activity will result in a determination of the expected times for that activity.
• B) The beta distribution is used as a way of approximating a normal probability distribution for time estimates.
• C) The larger the difference between most pessimistic time and most optimistic time for an activity, the smaller the variance of that time estimate.
• D) The project manager is usually the only person involved in making time estimates, since obtaining estimates from workers involved in the activities would result in inconsistent estimates.

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Definitions:

Power Circuit

The part of an electrical system that distributes power to various components or devices, capable of handling high currents.

Contactor Unit

An electrical device designed to switch an electrical power circuit on or off, typically used for controlling large loads in industrial applications.

Overload Unit

An overload unit is a protective device used in electric circuits to prevent motors and other electrical devices from operating at excessive current levels that could cause damage or overheating.

Manual Motor Starter

A manually operated switch designed to start and stop motors while providing overload protection.