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As a Part of a Medical Research Study,a Researcher Exposes

Question 115

Multiple Choice

As a part of a medical research study,a researcher exposes two groups of participants to either an actual painkiller or a sugar pill.The participants feel their pain being eliminated even with the sugar pill.In this case,the sugar pill is known as the


A) confederate.
B) random sample.
C) placebo.
D) independent variable.

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