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A researcher uses a crossover design,in which Group 1 receives Treatment A and then partway through the study receives Treatment B. Which of the following
A researcher uses a crossover design,in which Group 1 receives Treatment A and then partway through the study receives Treatment B. Which of the following best describes the treatment exposure for participants in Group 2?
Participants in Group 2receive Treatment A only.
Participants in Group 2receive Treatment B only.
Participants in Group 2 receive Treatment A and then Treatment B.
Participants in Group 2receive Treatment B and then Treatment A.
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