Select the correct number of FACTORS and LEVELS for this study: A researcher would like to test if different studying strategies will affect the time it takes for one to complete an exam. The researcher assigns a group of volunteers ranging from middle school to undergraduate students to a group that crams for 12 hours before exam, a group that crams 3 days before exam, and a group that studies for 1 week before the exam.     3 Factors, 1 Level     1 Factor, 1 Level     3 Factors, 3 Levels     1 Factor, 3 Levels

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