2. (SC.8.N.1.1) When investigating a new cancer-fighting drug, medical
researchers give some of the subjects a pill that contains the drug. Some
other subjects are given a pill that does not contain the drug. The drug-
free pill serves what purpose in the design of this investigation?
is it a controlled experiment, an experimental variable, a separate trial, or a qualitative comparison?
Answers: 3
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2. (SC.8.N.1.1) When investigating a new cancer-fighting drug, medical
researchers give some of the...
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