Name: ________________________
April 1, 2011
ID: ___________________
1
ReviewQuiz4_Chapter9~11
Multiple Choice
____
1.
In general, an increase in variance for the sample of difference scores will cause ____.
a.
a decrease in the standard error and a decrease in the value of t
b.
a decrease in the standard error and an increase in the value of t
c.
an increase in the standard error and a decrease in the value of t
d.
an increase in the standard error and an increase in the value of t
____
2.
What is the sample variance and the estimated standard error for a sample of n = 4 scores with SS = 300?
a.
s
2
= 10 and s
M
= 20
b.
s
2
= 100 and s
M
= 5
c.
s
2
= 100 and s
M
= 20
d.
s
2
= 10 and s
M
= 5
____
3.
A hypothesis test produces a t statistic of t = 2.14. If the researcher is using a twotailed test with
α
= .05 for a
one sample t test, how large does the sample have to be in order to reject the null hypothesis?
a.
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 Spring '07
 Pfordesher
 Statistics, Normal Distribution, Standard Error, Variance, Null hypothesis

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