7.5 Refer to Table 2.10 on death penalty verdicts. Let D = defendant’s race, V =

victim’s race, and P = death penalty verdict. Table 7.20 shows output for fitting model (DV,DP,PV ). Estimates equal 0 at the second category for any variable.

a. Report the estimated conditional odds ratio between D and P at each level of V . Interpret.

b. The marginal odds ratio between D and P is 1.45. Contrast this odds ratio with that in (a), and remark on how Simpson’s paradox occurs for these data.

c. Test the goodness of fit of this model. Interpret.

d. Specify the corresponding logistic model with P as the response.