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Psy207B
March 4, 2011
Name: ________________________
Person Number: ___________________
1
ReviewQuiz3_Chapter5~8
Multiple Choice
Identify the choice that best completes the statement or answers the question.
1.
Suppose you earned a score of
X =
54 on an exam. Which set of parameters would give you the highest grade?
a.
μ
= 50 and
σ
= 2
b.
μ
= 50 and
= 8
c.
μ
= 52 and
= 2
d.
μ
= 52 and
= 8
2.
For a sample with
M =
80, a score of
X =
88 corresponds to
z =
2.00. What is the sample standard deviation?
a.
2
b.
4
c.
8
d.
16
3.
What proportion of a normal distribution falls between
z =
1.16 and
z =
+1.16?
a.
0.3770
b.
0.6230
c.
0.2460
d.
0.7540
4.
For a particular population, a sample of
n =
4 scores has a standard error of 10. For the same population, a sample
of
n =
16 scores would have a standard error of _____.
a.
2.5
b.
5
c.
10
d.
20
5.
A random sample of
n =
4 scores is obtained from a normal population with
μ
= 20 and
= 4. What is the
probability of obtaining a mean greater than
M =
22 for this sample?
a.
0.50
b.
1.00
c.
0.1587
d.
0.3085
6.
A researcher is conducting an experiment to evaluate a treatment that is expected to
decrease
the scores for
individuals in a population which is known to have a mean of
μ
= 80. The results will be examined using a
onetailed hypothesis test. Which of the following is the correct statement of the null hypothesis?
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This note was uploaded on 04/20/2011 for the course PSY 207 taught by Professor Pfordesher during the Spring '07 term at SUNY Buffalo.
 Spring '07
 Pfordesher

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