In This Chart,note That Two Arrows Point to Circle 5

question 67

Multiple Choice

In this chart,note that two arrows point to circle 5.This means that:

• A)Activity E requires two subsequent activities
• B)Activity H requires two precedent activities
• C)Both activities C and D require activity H to be completed first
• D)none of these

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Definitions:

Random Sample

A method of selecting a sample from a population in which each member has an equal chance of being chosen.

External Validity

The extent to which the results of a study can be generalized to other situations and to other people.

Internal Validity

The extent to which a study establishes a trustworthy cause-and-effect relationship between a treatment and an outcome.

Institutional Review Board (IRB)

A committee that reviews and monitors research involving human participants to ensure ethical standards are maintained.