The following data come from Ramsey and Shafer (1996) but were originally collected in conjunction with the trial of McClesky v. Zant in 1998. In that trial the defendant’s lawyers tried to demonstrate that black defendants were more likely to receive the death penalty if the victim was white than if the victim was black. They were attempting to prove systematic discrimination in sentencing. The State of Georgia agreed with the basic fact, but argued that the crimes against whites tended to be more serious crimes than those committed against blacks, and thus the difference in sentencing was understandable. The data are shown below. Were the statisticians on the defendant’s side correct in arguing that sentencing appeared discriminatory? Test this hypothesis using the Mantel-Haenszel procedure.
Calculate the odds ratio of a death sentence with white versus black victims.
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