7 - 2 As correlation coeficients the ability to predict one...

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2. As correlation coe ff٠ cients ____, the ability to predict one variable based on knowledge of the second variable increases. A) become positive B) become negative C) increase in strength D) decrease in strength Points Earned: 1.0/1.0 Correct Answer(s): C 3. A researcher wants to see if a protein-enriched diet will enhance the maze-running performance of rats. One group of rats is fed the high-protein diet for the duration of the study; the other group continues to receive ordinary rat chow. In this experiment, the group of rats that is fed the high-protein diet is ____ group; the group that receives ordinary rat chow is ____ group. Points Earned: 1.0/1.0 Correct Answer(s): D 4. If a college professor surveyed his students about their attitudes concerning the social security system and concluded that young adults doubt that they will ever receive social security benefits, his conclusion would be flawed because Points Earned: 1.0/1.0 Correct Answer(s): A 5. What procedure helps correct for experimenter bias?
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