Multiple Choice
A researcher studies a new mathematics program. At the beginning of the year, 100 students are randomly assigned to receive a new program and 100 students are randomly assigned to use the previously used mathematics program. The participants are pretested at the beginning of the year, and they are posttested at the end. What kind of experimental design did the researcher use?
A) Pretest-posttest control-group design
B) Posttest-only design with nonequivalent groups
C) One-group posttest-only design
D) Posttest-only control-group design
Correct Answer:
Verified
Correct Answer:
Verified
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