(a) For the air pollution data in Section 1.8, use the AIC criterion to find the best model for subset sizes four to eight. *(b) Explain why the best model according to AIC is different from the best...

(a) For the air pollution data in Section 1.8, use the AIC criterion to find the

best model for subset sizes four to eight.

*(b) Explain why the best model according to AIC is different from the best

model chosen by BIC in Table 1.8. (Hint: Compare the second terms in

(1.46) and (1.47).)