An Activity on a PERT Network Has These Time Estimates

question 5

Multiple Choice

An activity on a PERT network has these time estimates: optimistic = 2,most likely = 3,and pessimistic = 8.What is its expected activity time and variance?

• A)3.67;1
• B)3.67;6
• C)4.33;1
• D)4.33;6
• E)none of the above

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Definitions:

History

A field of study concerned with the analysis and interpretation of past events.

Internal Validity

The extent to which a study can establish a cause-and-effect relationship free from external influences or confounding variables.

Simple Interrupted Time-Series Design

A research design analyzing data collected at regular intervals over time to determine the effect of an intervention.

Intervention of the Series

A sequence of actions or experimental manipulations designed to investigate the effects of those actions on a subsequent process or outcome.