Question: A researcher plans to conduct a research study comparing two treatment conditions with a total of 20 scores in each treatment. Which of the following

A researcher plans to conduct a research study comparing two treatment conditions with a total of 20 scores in each treatment. Which of the following designs would require only 20 participants?

Group of answer choices

Independent-measures design.

Repeated-measures design.

Matched-subjects design.

Between-measures design.

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