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question 3 QUESTION 3 If in an experiment there is concern about a pretest affecting the experimental treatment and the posttest results, the most appropriate

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QUESTION 3 If in an experiment there is concern about a pretest affecting the experimental treatment and the posttest results, the most appropriate design would be the: 1. pretest-posttest control group design. 2. pretest-posttest randomized group design. 3. pretest-posttest control group design extended in time. 4, posttest-only control group design

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