In an attempt to reduce the use of gasoline, a city imposed a $2.50 per gallon tax on gasoline in 2005
A researcher working for the city, located data on annual gallons used for the 5 years leading up to the gas tax (to provide a baseline) and located data for the 5 years after the start of the gasoline tax (to show the consumption pattern after the tax). Which of the following best describes this study design?
a. A-B-A-B design
b. Changing-criterion design
c. Interrupted time-series design
d. Regression-discontinuity design
C
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Morton Grodzinsho argued that the marble cake is a far more accurate image of federalism than the layered cake
Indicate whether the statement is true or false
In Gomilion v. Lightfoot (1960) the Supreme Court declared unconstitutional an extreme form of
a. the literacy test. b. the white primary. c. the grandfather clause. d. the racial gerrymander.