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when a study is designed so that neither the subjects nor the experimenters know which subjects are in the treatment group and which ones are in the control group, the study is called a ____ experiment.

User Aushin
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2 Answers

5 votes

Answer:double-blind (APEX)

Explanation:

User Albanx
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1 vote
(taken from a source)

double blind

Hope this helped!

:)
User Jbchichoko
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