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If a Researcher Offers Beer Drinkers an Extra Incentive to Recruit

question 30

Multiple Choice

If a researcher offers beer drinkers an extra incentive to recruit their friends who also drink beer to participate in the study,s/he is using a(n) ________sample.


Definitions:

Smooth Muscle

A type of muscle found in the walls of internal organs such as the stomach, intestines, and blood vessels, which contracts involuntarily.

Respiratory Bronchiole

The smallest air passages in the lungs where gas exchange occurs, connecting the terminal bronchioles to alveolar sacs.

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