Determine Whether the Study Depicts an Observational Study or an Experiment

question 99

Multiple Choice

Determine whether the study depicts an observational study or an experiment
-A researcher obtained a random sample of 100 smokers and a random sample of 100 nonsmokers. Afterinterviewing all 200 participants in the study, the researcher compared the rate of depression among thesmokers with the rate of depression among nonsmokers.

• A) observational study
• B) experiment

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Definitions:

Caucasian

Refers to people of European, North African, or Southwest Asian ancestry.

African Americans

A racial or ethnic group in the United States with ancestry from any of the black populations of Africa.

Socioeconomic Status

A measure of an individual's or family's economic and social position relative to others, based on income, education, and occupation.

African Ancestry

refers to the lineage or heritage of an individual or community tracing back to the African continent.