To Calculate the Probability of Completing a Project by a Certain

question 122

Multiple Choice

To calculate the probability of completing a project by a certain date:

• A) the expected completion time of the project is taken to be the sum of the activity times on the shortest path.
• B) the variance of the distribution of project completion times is taken to be one-sixth the difference between the latest finish time and the earliest finish time of the last activity in the project.
• C) we assume that the activity durations are independent of each other so that the normal distribution can be used.
• D) we need only the parameters of the beta distribution for the finish node of the diagram.

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Definitions:

Hydrogen Bond

A weak chemical bond between an electronegative atom, like oxygen or nitrogen, and a hydrogen atom bound to another electronegative atom, contributing to the structure and properties of molecules.

Atoms

The basic unit of a chemical element, consisting of a nucleus of protons and neutrons, with electrons orbiting around them.

Triple Bonds

Strong chemical bonds where three pairs of electrons are shared between two atoms, commonly seen in molecules like nitrogen gas (N₂).

Ionic Bond

A chemical bond formed between two ions with opposite charges through the electrostatic attraction between the ions, typically formed between a metal and a non-metal.