STAT 705 Spring 2017
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Homework 3
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21.5(a,b,d), 21.6(a,c,d,e), 21.11, 21.13(b,c,d,f),
28.3, 28.7(b,d,e), 28.13(a), 28.14, 28.15(a,b,c), 28.16(b)
18.25, 18.27

[The chapter 22 problems have been moved to HW 4!]

NOTE: Problems 21.5, 21.6, 21.13, 28.6, 28.14, 28.15, 18.25, 22.9, 22.10
require analysis using a computer package such as SAS or R.

NOTE: For 28.3, look on page 1174 for the definitions 
of n and n_p.

HINT: For 28.7, do you think the 12 washing periods (the blocks) 
are fixed or random?  Do you think a population of washing periods 
is of interest, or just these 12 washing periods?

NOTE: For 28.14, do the residual plot (vs. fitted values), 
the normal Q-Q plot, and the Shapiro-Wilk test.

NOTE:  For 18.25, where it says "nonparametric rank F test", do the
Kruskal-Wallis test (they are equivalent).



The "Auditor Training", "Auditor Training #21.13", "Detergent Effectiveness", 
"Hardware Sales", "Telephone Communications" and "Questionnaire Color #22.9"
data sets are given on the course web page.

Please write your answers neatly and clearly!