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A Study in Which Neither the Subjects Participating in the Research

Question 29

Multiple Choice

A study in which neither the subjects participating in the research nor the scientists performing the research know which subjects are receiving the treatment and which are getting the placebo is known as a(n) _____ study.​


A) ​double-blind
B) half-blind
C) confidential
D) crossover
E) ​observational

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