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The national speed limit in the United States was reduced to 55 mph in 1974. Proponents and critics ...

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The national speed limit in the United States was reduced to 55 mph in 1974. Proponents and critics ...

The national speed limit in the United States was reduced to 55 mph in 1974. Proponents and critics of this legislation have looked at the number of traffic fatalities on each of the major U.S. highways (e.g., I-90, I-65, I-75) for the years preceding and following this legislation. The examination of traffic fatalities on each of the various highways illustrates the use of
a.   pretest-posttest one-group design.
b.   the time-series design.
c.   the multiple time-series design.
d.   the nonequivalent control group design.
e.   the one-shot case study.

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The Practice of Social Research

Edition: 13^th

Author: Babbie

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