STAT 599 Spring 2013 Homework 2
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1.  Do problem 2 given on page 66 of the book.

2.  Do problem 3 given on page 66 of the book.

3.  Do problem 7 given on page 67 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 package) for use in an R session, type
library(faraway); library(MASS)

Then you can type
help(salmonella)
and
help(ships)
and 
help(esdcomp)

for details on these data sets.