Question 1

If the null hypothesis is true, then the t test should be close to​

Accepted Answer

A)  0.00.
B)  ±1.65.
C)  ±1.96.
D)  ±3.00.

Question 2

Which of the following is a type of correlated-groups designs?

Accepted Answer

A)  within-subjects designs
B)  matched-subjects designs
C)  between-subjects designs
D)  both within-subjects designs and matched-subjects designs

Question 3

If a correlated-groups t test and an independent-groups t test both have df=16, which experiment used more participants?​

Accepted Answer

A)  They both used the same number of participants (n=18) .
B)  They both used the same number of participants (n=17) .
C)  The correlated-groups t test used more participants.
D)  The independent-groups t test used more participants.

Question 4

Which of the following t test results has the greatest chance of statistical significance?​

Accepted Answer

A)  t(28)  = 1.70
B)  t(14)  = 1.70
C)  t(18)  = 1.70
D)  t(10)  = 1.70

Question 5

If researchers reported that, for a correlated-groups design, t(20)  = 3.57, p

Accepted Answer

A)  a total of 21 people participated in the study.
B)  a total of 22 people participated in the study.
C)  a total of 40 people participated in the study.
D)  the number of participants cannot be determined. A

Question 6

Concerns for within-subjects designs frequently include _____ and _____.​

Accepted Answer

A)  order effects; nonequivalent control groups
B)  carryover effects; mortality
C)  carryover effects; order effects
D)  all of the options are correct

Question 7

Identify the two types of correlated-groups designs discussed in the text and explain why each is considered a correlated-groups design.​

Accepted Answer

The two types of correlated-groups desig...

Question 8

tcv = 3.35 and tobt = -3.55. Based on these results, we​

Accepted Answer

A)  reject Ho.
B)  fail to reject Ho.
C)  accept Ho.
D)  reject Ha.

Question 9

A design in which the same participants are used in each condition is a _____ design.​

Accepted Answer

A)  matched-subjects
B)  between-subjects
C)  within-subjects
D)  across-subjects

Question 10

A problem for within-subjects designs in which the order of the conditions has an effect on the dependent variable is

Accepted Answer

A)  counterbalancing.
B)  order effects.
C)  a Latin square effect.
D)  the individual differences effect.

Question 11

One advantage of the correlated-groups t test over the independent-groups t test is that it reduces the error variance due to​

Accepted Answer

A)  the degrees of freedom.
B)  the independent variable.
C)  the dependent variable.
D)  individual differences. D

Question 12

For a correlated-groups t test, the null hypothesis states that​

Accepted Answer

A)  H0: m1-m2 = 0.
B)  H0: m1-m2 > 0.
C)  Ha: m1-m2 = 0.
D)  Ha: m1-m2 > 0.

Question 13

A mechanism for controlling order effects either by including all orders or treatment presentations or by randomly determining the order for each participants is

Accepted Answer

A)  ordering.
B)  counterbalancing.
C)  a Latin square.
D)  counterbalancing and a Latin square.

Question 14

A design in which the participants in the experimental and control groups are related in some way is a _____ design.​

Accepted Answer

A)  correlated-groups
B)  between-subjects
C)  across-subjects
D)  none of the options is correct

Question 15

In a correlated-groups design, if n = 20, then df =​

Accepted Answer

A)  20.
B)  19.
C)  21.
D)  40. B

Question 16

For a correlated-groups t test, the alternative hypothesis states that​

Accepted Answer

A)  H0: m1-m2 = 0.
B)  H0: m1-m2 > 0.
C)  Ha: m1-m2 = 0.
D)  Ha: m1-m2 > 0.

Question 17

When using a correlated-groups t test, df =​

Accepted Answer

A)  n1 + n2 - 2.
B)  n - 1.
C)  n1 + n2 - 1.
D)  n - 2.

Question 18

Which of the following are aspects of a study that can increase power?​

Accepted Answer

A)  greater differences produced by the independent variable
B)  smaller variability of raw scores in each condition
C)  increased sample size
D)  all of the options are correct

Question 19

Explain what counterbalancing is, how it is achieved, and which confound it helps to minimize.​

Accepted Answer

​Counterbalancing is a mechanism for con...

Question 20

_____ are more of a concern for _____-subject designs, but tend not to be as great a concern for _____-subject designs.​

Accepted Answer

A)  Order effects; within; between
B)  Order effects; between; within
C)  Demand characteristics; between; within
D)  none of the options is correct

Exam 10: Experimental Design and Analysis II

If the null hypothesis is true, then the t test should be close to​

Correct AnswerverifiedShow Answer

Which of the following is a type of correlated-groups designs?

Correct AnswerverifiedShow Answer

If a correlated-groups t test and an independent-groups t test both have df=16, which experiment used more participants?​

Correct AnswerverifiedShow Answer

Which of the following t test results has the greatest chance of statistical significance?​

Correct AnswerverifiedShow Answer

If researchers reported that, for a correlated-groups design, t(20) = 3.57, p

Correct AnswerverifiedA

Concerns for within-subjects designs frequently include _____ and _____.​

Correct AnswerverifiedShow Answer

Identify the two types of correlated-groups designs discussed in the text and explain why each is considered a correlated-groups design.​

Correct AnswerverifiedThe two types of correlated-groups desig...View AnswerShow Answer

tcv = 3.35 and tobt = -3.55. Based on these results, we​

Correct AnswerverifiedShow Answer

A design in which the same participants are used in each condition is a _____ design.​

Correct AnswerverifiedShow Answer

A problem for within-subjects designs in which the order of the conditions has an effect on the dependent variable is

Correct AnswerverifiedShow Answer

One advantage of the correlated-groups t test over the independent-groups t test is that it reduces the error variance due to​

Correct AnswerverifiedD

For a correlated-groups t test, the null hypothesis states that​

Correct AnswerverifiedShow Answer

A mechanism for controlling order effects either by including all orders or treatment presentations or by randomly determining the order for each participants is

Correct AnswerverifiedShow Answer

A design in which the participants in the experimental and control groups are related in some way is a _____ design.​

Correct AnswerverifiedShow Answer

In a correlated-groups design, if n = 20, then df =​

Correct AnswerverifiedB

For a correlated-groups t test, the alternative hypothesis states that​

Correct AnswerverifiedShow Answer

When using a correlated-groups t test, df =​

Correct AnswerverifiedShow Answer

Which of the following are aspects of a study that can increase power?​

Correct AnswerverifiedShow Answer

Explain what counterbalancing is, how it is achieved, and which confound it helps to minimize.​

Correct Answerverified​Counterbalancing is a mechanism for con...View AnswerShow Answer

_____ are more of a concern for _____-subject designs, but tend not to be as great a concern for _____-subject designs.​

Correct AnswerverifiedShow Answer

If the null hypothesis is true, then the t test should be close to

Correct Answer
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Correct Answer
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If a correlated-groups t test and an independent-groups t test both have df=16, which experiment used more participants?

Correct Answer
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Which of the following t test results has the greatest chance of statistical significance?

Correct Answer
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Correct Answer
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A

Concerns for within-subjects designs frequently include _ and _.

Correct Answer
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Identify the two types of correlated-groups designs discussed in the text and explain why each is considered a correlated-groups design.

Correct Answer
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The two types of correlated-groups desig...
View Answer

t_cv = 3.35 and t_obt = -3.55. Based on these results, we

Correct Answer
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A design in which the same participants are used in each condition is a _____ design.

Correct Answer
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Correct Answer
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One advantage of the correlated-groups t test over the independent-groups t test is that it reduces the error variance due to

Correct Answer
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D

For a correlated-groups t test, the null hypothesis states that

Correct Answer
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Correct Answer
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A design in which the participants in the experimental and control groups are related in some way is a _____ design.

Correct Answer
verified

In a correlated-groups design, if n = 20, then df =

Correct Answer
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B

For a correlated-groups t test, the alternative hypothesis states that

Correct Answer
verified

When using a correlated-groups t test, df =

Correct Answer
verified

Which of the following are aspects of a study that can increase power?

Correct Answer
verified

Explain what counterbalancing is, how it is achieved, and which confound it helps to minimize.

Correct Answer
verified
Counterbalancing is a mechanism for con...
View Answer

___ are more of a concern for _-subject designs, but tend not to be as great a concern for ___-subject designs.

Correct Answer
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