7 - 2 As correlation coeficients the ability to predict one variable based on knowledge of the second variable increases A become positive B become

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2. As correlation coe f 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. A) a control; a control B) a control; an experimental C) an experimental; an experimental D) an experimental; a control 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 beneFts, his conclusion would be ±awed because A) his students were not a representative sample of young adults. B) he did not survey the entire population of young adults. C) he knew his subjects before he surveyed them. D) his students were a random sample. Points Earned: 1.0/1.0 Correct Answer(s): A 5. What procedure helps correct for experimenter bias? A) extraneous or confounding variables B) sleep learning or hypnosis C) a higher standard for statistical signiFcance D) use of the double-blind procedure
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Points Earned: 1.0/1.0 Correct Answer(s): D 6. Which
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This note was uploaded on 01/29/2012 for the course PSY 100 taught by Professor Mrsmar during the Spring '11 term at Seattle Central Community College.

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7 - 2 As correlation coeficients the ability to predict one variable based on knowledge of the second variable increases A become positive B become

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