A Researcher Is Asked to Distribute Medication to the Participants

question 28

Multiple Choice

A researcher is asked to distribute medication to the participants of a study.Although each cup of medication is labeled with the participant's number,neither the researcher nor the participants know who is getting the placebo and who is getting the actual treatment.What type of experimental method does this example illustrate?

• A)deception procedure
• B)researcher blindness procedure
• C)placebo effect procedure
• D)double-blind procedure

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Definitions:

Two-tailed Test

A statistical test that considers both directions of an effect, testing the possibility of relationships in both positive and negative directions.

Significant

Denoting a result in statistical analysis that is likely not due to chance, thereby indicating a meaningful difference or correlation.

Z-statistic

A statistic used in hypothesis testing, calculated as the difference between a sample statistic and its hypothesized population parameter, divided by the standard error.

Critical Value

A limit in hypothesis testing that establishes the criteria for dismissing the null hypothesis.