STAT 704 Spring 2016
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Homework 8
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Do the following problems from the textbook:

16.30, 16.33(a), 16.38, 16.41
17.1, 17.2, 17.3, 17.9(b,c), 17.11(a,b,c,d,e), 17.16(a), 17.30, 17.31,
18.5(a,b), 18.7(a,b), 18.13(b).

NOTE: Problems 17.9, 17.11, 17.16, 18.5, 18.7, 
and 18.13 require analysis using a computer package such 
as SAS or R.

HINT:  For 17.30, change the notation in Appendix A 
from Y_1, Y_2,... and Z_1, Z_2,... 
to Y_11, Y_12,... and Y_21, Y_22,...
Also, use the expression in the first equality of (16.38) 
on page 696 to show that, in the situation of problem 17.30,
s^2 in (A.63) on pg. 1309 is equal to MSE.

NOTE: In 17.31, you may derive formula (17.30) for the case 
in which the factor levels have equal sample sizes.

NOTE: For 18.5(a,b) and 18.7(a,b), simply do the residual 
plots (vs. fitted values), the normal Q-Q plots, and the
Shapiro-Wilk test for normality of errors, and comment on 
your findings.

NOTE:  For 18.13(b), just do the Brown-Forsythe test; you 
don't have to do the Hartley test.

The "Questionnaire Color" and "Cash Offers" 
data sets are given on the course web page.

Please write your answers neatly and clearly!