In a Double-Blind Study

question 97

Multiple Choice

In a double-blind study,

• A) participants are not aware of who is in the treatment and control groups, but the researcher providing the treatment does know.
• B) neither the researcher providing the treatment nor the participants are aware of who is in the treatment and who is in the control group.
• C) neither the researcher providing the treatment nor the research participants can ever be made aware of the research findings.
• D) participants are not aware that they are participating in a research study.

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Definitions:

Population Size

The total number of individuals or elements that make up the population being studied or analyzed.

First Selection

The initial choice or decision made from a set of options or alternatives.

Simple Random Sample

A simple random sample of size n from a finite population of size N is a sample selected such that each possible sample of size n has the same probability of being selected.

Probability

An indicator of the probability that a particular event will take place, represented by a numerical value ranging from 0 to 1, with 0 meaning the event cannot happen and 1 meaning the event is certain to happen.