Table 10.22 contains summary information on the fit of the best two logistic regression models based on a sample of ???? = 313 observations for models including

???? = 1, 2,…, 7 explanatory variables. Use the information in Table 10.22 to answer the following questions.

(a) Compute the value of BIC for each model listed in Table 10.22.

(b) If there are no scientific reasons for including any particular explanatory variable in the final model, which model is best according to the BIC variable selection procedure?

(c) If there are scientific reasons why the explanatory variable ????4 should be included in the final model, which model is best according to the BIC variable selection procedure?