If the state of Utah were to use an interrupted time-series design to study the effects of raising its speed limit to 65 mph, what type of confounding variables might present a problem?
A) Confounding due to selection and cohort effects.
B) Confounding due to history and instrumentation.
C) Confounding due to maturation and testing.
D) Confounding due to regression to the mean
Answer: B
Political Science
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Federal law requires that agencies must take what step before issuing new rules and regulations?
a. They must obtain approval from the president. b. They must obtain approval from Congress. c. They must consult with an administrative law judge. d. They must solicit public comments.
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Research has found that highly emotional ads have the most effect on people who know the least about politics
Indicate whether the statement is true or false
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