Experimental effects, such as the Hawthorne effect,
A) generally are not germane in quasi-experiments.
B) typically require instrumental variable estimation in quasi-experiments.
C) can be dealt with using binary variables in quasi-experiments.
D) are the most important threat to internal validity in quasi-experiments.
Answer: A) generally are not germane in quasi-experiments.
Economics
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Market prices are
a. conveyors of information. b. determined by the interactions of supply and demand in voluntary exchange. c. indicators of the relative scarcity of resources and products. d. all of the above.
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About two-thirds of U.S. electricity is generated from:
A. hydroelectric. B. petroleum. C. nuclear energy. D. coal and gas.
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