8.10 part iii: You can use the "It can be shown" statement on page 215 to justify the chi-square 
               part, and you can say that independence is assumed between terms in the ratio.


9.6  The X matrix is n x 2, so X'X is 2 x 2. Invert that matrix, and the question calls for the
     diagonal entries in that matrix.

9.15 parts a and b: An example very similar to this is examined on page 206. Be sure to at least briefly answer 
                    whether the various hypotheses are sensible. 
     part c: Use regression models with both dummy and deviation coding to generate the SS expressions.