*This preview shows
pages
1–3. Sign up to
view the full content.*

- 1 -
Solutions to BUAD 310 In-Class Practice for Final
12/1/09
Attached are the Standard Normal Table,
t
Table, and Chi-Square Table that we used in class.
1.
The multiple coefficient of determination is the _______ divided by the total variation
A)
Unexplained variation
B)
SSE
C)
Explained variation
D)
Distance value
E)
Correlation Coefficient
2.
A multiple regression analysis with 20 observations on each of three independent variables and the
dependent variable would yield ______ and _______ degrees of freedom respectively for regression and
error.
A)
3, 17
B)
3, 16
C)
4, 16
D)
3, 19
E)
3, 20
3.
In multiple regression analysis, the mean square regression divided by mean square error yields the:
A)
Standard error
B)
F statistic
C)
R
2
D)
Adjusted R
2
E)
t statistic
4.
Suppose that we are testing the significance of the independent variable X
1
and we reject the null
hypothesis H
0
:
1
=
0.
We conclude that:
A)
X1 is significantly related to y.
B)
X
1
is not significantly related to y.
C)
X
1
is an unimportant independent variable
D)
1
is significantly related to the dependent variable y
5.
In a multiple regression model, it is desired to include marital status, which has the categories: single,
married, separated, divorced, and widowed. What will be the effect on the model?
A)
One more independent variable will be included.
B)
Two more independent variables will be included.
C)
Three more independent variables will be included.
D)
Four more independent variables will be included.
E)
Five more independent variables will be included.

This ** preview**
has intentionally

**sections.**

*blurred***to view the full version.**

*Sign up*- 2 -
Use the following information for questions
6
and
7
. The employees of McIntyre Publishing were offered
participation in the company’s health plan.
Some accepted this health plan, and some declined, possibly to use the
plan of a spouse or other relative.
Here are relevant figures:
Participate in
company health plan?
YES
Participate in
company health plan?
NO
TOTAL
Male
512
108
620
Female
370
130
500
TOTAL
882
238
1120
6.
If gender is independent of participation in the health plan, what is the expected number of females
participating in the health plan?
A)
106.25
B)
131.75
C)
280.00
D)
393.75
E)
488.25
7.
What are the degrees of freedom (Df) for the chi-square test of independence? At the 5%
level, is there
significant evidence against the hypothesis that gender is independent of whether or not an employee
participates in the health plan?

This is the end of the preview. Sign up
to
access the rest of the document.