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In an experiment to see if a new medication reduces the duration a headache, a placebo is: a dummy pill that looks like the new
In an experiment to see if a new medication reduces the duration a headache, a placebo is:
a dummy pill that looks like the new medication but has no active ingredients. a procedure for deciding who gets the new medication. the place where the subjects go when they have a headache. the randomization procedure. the sampling method.
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