In Section 6.1.5 we tested the joint null hypothesis H0 :b3 3:8 b4 1 and b1 6 b2 1:9 b3

In Section 6.1.5 we tested the joint null hypothesis H0 :b3 þ 3:8 b4 ¼ 1 and b1 þ 6 b2 þ 1:9 b3 þ 3:61 b4 ¼ 80 in the model SALES ¼ b1 þ b2PRICE þ b3ADVERT þ b4ADVERT2 þ e By substituting the restrictions into the model and rearranging variables, show how the model can be written in a form in which least squares estimation will yield restricted least squares estimates.