7.16 For the Maine accident data modeled in Section 7.3.2:

a. Verify that logistic model (7.9) follows from loglinear model (GLS, GI, LI, IS).

b. Show that the conditional log odds ratio for the effect of S on I equals

βS 1

− βS 2 in the logistic model and λIS 11

+ λIS 22

− λIS 12

− λIS 21 in the loglinear model.