According to Levitt, all but which of following is true regarding crime rates?
a. Controlling for other factors, there is a statistically significant but substantively small relationship between unemployment rates and property crime.
b. Violent crime does not vary systematically with the unemployment rate.
c. Changes in U.S. gun laws in the 1980s and 1990s, allowing for the carrying of concealed weapons by the average citizen, can account for a significant portion of the reduction in rate of crime during the 1990s decade.
d. The echo of the baby boom led to a temporary increase in the number of teenagers and young adults during the 1990sand thus offset most of the expected effects of the aging baby boom generation.
e. The impact that policing strategies had on the crime rate in 1990s is likely to have been minorat best.
Question 2
Based on the findings of Laub et al., it is probably best for former juvenile delinquents to ___________.
a. marry early (early 20s)
b. marry later in life (after age 30)
c. find someone to live with, but never tie the marital knot
d. never marry
e. either b or c
Estimating cicada population size and predation rates by birds.
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