Does Jeffrey Reiman's hazards approach argue that punishment by isolation of offenders makes matters worse and increases crime?
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Prisons Does prison really deter violent crime? Let $x$ represent percent change in the rate of violent crime and $y$ represent percent change in the rate of imprisonment in the general U.S. population. For 7 recent years, the following data have been obtained (Source: The Crime Drop in America, edited by Blumstein and Wallman, Cambridge University Press). $$ \begin{array}{l|rrrrrrr} \hline x & 6.1 & 5.7 & 3.9 & 5.2 & 6.2 & 6.5 & 11.1 \\ \hline y & -1.4 & -4.1 & -7.0 & -4.0 & 3.6 & -0.1 & -4.4 \\ \hline \end{array} $$ Complete parts (a) through (e), given $\Sigma x=44.7, \Sigma y=-17.4, \Sigma x^{2}=315.85$, $\Sigma y^{2}=116.1, \Sigma x y=-107.18$, and $r \approx 0.084 .$ (f) Critical Thinking Considering the values of $r$ and $r^{2}$, does it make sense to use the least-squares line for prediction? Explain.
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Economist Steven D. Levitt estimated that, on average, for each additional criminal locked up in the United States, 15 crimes are eliminated. In addition, although it costs about $\$ 30,000$ a year to keep a prisoner incarcerated, the average prisoner would have caused $\$ 53,900$ worth of damage tosociety per year if free. If this estimate is correct, does it make economic sense to build more prisons? (LO23-2)
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