IE 410 Midterm Exam
Fall 2003
Answer Sheet
Instructions
Exam is to be completed by Thursday, October 8.
On campus students should hand in
the exam then.
Distance students can mail, email, or fax on Oct 8.
Please use this fax
number: (610) 7584886.
The exam is of course open book and notes.
You may use Statgraphics or any other
package.
You may not discuss the exam with anyone except me.
You should however feel free to
ask me any questions you want.
Of course I will exercise discretion in answering them.
I will grade the answers you provide on the answer sheet on the next page.
You may
write by hand or use no smaller than 10 point font.
You may not increase the area
provided on the answer sheet.
You may attach supporting documentation (which I may
or may not look at).
The exam questions follow the answer sheet
Question 1
What sample size would you recommend?
N=_______
n=_________
Question 2
a)
What is the Pvalue of the ANOVA Ftest? ___________
b)
What contrast would you recommend to test for differences in cash offers
between sexes?
c)
Estimate the contrast in part b) and provide a 99% confidence interval.
d)
Test the contrast you recommended in b).
What is the Pvalue of the test?
_________
e)
Conduct the appropriate test(s).
What is the Pvalue of the test?
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Question 3
a) Perform a complete residual analysis.
Comment on the results.
b) If a transform is indicated in part a), perform it, recalculate the analysis of variance,
and conduct a new residual analysis.
Is a transform required?
If so, what value of
λ
?
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 Fall '04
 Storer
 used car, Midterm Exam Fall, car dealers

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