STAT 599 Spring 2013 Homework 5
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1.  Do problem 1 given on page 199 of the book.

2.  Do problem 3 given on page 199 of the book.

3.  Do problem 1(a-d, and part e is extra credit) given on page 209 of the book.
 
NOTE:  Examine all relevant aspects of model building that we have 
discussed in class, such a goodness-of-fit, model diagnostics, etc.
For each problem, write a couple of paragraphs summarizing your model and 
your validation of it.

*** For these problems, you will have to load the 
'faraway' package in R to access the data sets.  If you have never
installed it, type
install.packages("faraway")
and follow the directions.

To load the package (and the MASS and lme4 and gee packages) for use in an R session, type
library(faraway); library(MASS); library(lme4); library(gee)

Make sure you have installed the 'lme4' and 'gee' packages from the internet first.

Then you can type
help(ratdrink)
and
help(nepali)
and 
help(ohio)

for details on these data sets.