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Question 1:
Lets say you want to know whether a medication is effective for curing the common cold. You take 1,000 people with colds, and divide them into 2 groups of 500. You give the medication to one group, and placebo to the other group. To make this a DOUBLE-BLIND study, what would you have to do?
A. Conceal from both the patients and the experimenters which pills are medication and which pills are placebo.
B. Dont tell the administrators of the experiment whether theyre giving out medication or placebo.
C. Put blindfolds on the 500 people who get the medication.
D. Dont tell the patients of either group whether theyre getting medication or placebo.

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Trivial Practice Quiz science-technology - Test 111 | Englishfreetest.com