MGMT 305 SAMPLE EXAM 2 – Fall 2010
Date: November 2, 2010
Identify the letter of the choice that
best
completes the statement or answers the question.
____
1.
Suppose we have a lowertailed test
H
0
: µ >
µ
0
and
Ha: µ < µ
0
. If we reject H
0
at 5% level of significance,
which one is the value of the z test statistic?
a.
1.4
b.
2.5
c.
1.4
d.
2.5
____
2.
Which of the following is true
about the pvalue?
____
3.
Suppose the mean sales volume of an automobile dealership is 15 automobile per month. If the manager of
the dealership wants to conduct a research study to see whether a new bonus plan increases the sales volume,
then which of the following are the right hypotheses?
____
4.
It is known that the mean of a population is 58. A sample of size 50 is taken and the sample mean is computed
as 55. You decided to reject the null hypothesis that
μ
≥
60.
____
5.
If the null hypothesis is not
rejected at the 2% level of significance, it
a.
will always be rejected at the 1.5% level of significance.
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b.
will never be rejected at the 3% level of significance.
c.
may be rejected or not rejected at the 1.5% level of significance.
d.
will never be rejected at the 1.5% level of significance.
____
6.
Two independent simple random samples are selected to test the difference between the means of two
populations whose standard deviations are not known.
The sample sizes are n
1
= 20 and n
2
= 40.
The correct
distribution to use is the
____
7.
A random sample of 100 people was taken. Fiftytwo of the people in the sample favored candidate Bush. We
are interested in determining whether the proportion of the population in favor of Bush is significantly less
than 55%.
What is the value of the test statistic?
____
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 Spring '08
 Priya
 Normal Distribution, Null hypothesis, Statistical hypothesis testing, μd

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