A researcher would like to compare two treatment conditions with a set of 30 scores in each treatment.If a repeated-measures design is used,the study will require n = 60 participants.

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A repeated-measures design is a within-subjects design, meaning that each participant is exposed to both conditions. Therefore, the study would only require 30 participants if each participant undergoes both treatments.

A Researcher Would Like to Compare Two Treatment Conditions with a Set