Question 1

A repeated measures study is

Accepted Answer

A)  also called a within-subjects design. 
B)  also called a between-subjects design. 
C)  a type of related samples design. 
D)  both "a" and "c" are correct. 
A)  also called a within-subjects design. 
B)  also called a between-subjects design. 
C)  a type of related samples design. 
D)  both "a" and "c" are correct.

Question 2

Professors who teach introductory psychology courses often hear students say that psychology is just "common sense." To test this assumption, Professor Empiricism administers a Fact or Fiction Survey at the beginning of the semester and then again at the end of the semester. She believes that after students are exposed to research-based evidence, students will score higher on the end-of-semester survey. Pre- and post-scores for a sample of her students are listed below:
   a. Test the professor's hypothesis using a one-tailed, repeated measures t test with α = .05.
b. Calculate Cohen's d effect size and interpret the result.

Accepted Answer

Fact or Fiction Survey
a. @#IMG-DLM& Step 1:
H₀: μ

Question 3

Which of the following is the correct notation for the null hypothesis of a repeated measures t test for which the alternative hypothesis is nondirectional?

Accepted Answer

A)  H₀: μ₁ = μ₂ 
B)  H₀: μD = 0 
C)  H₀: μ₁ - μ₂ = 0 
D)  H₀: either "a" or "c" above 
A)  H₀: μ₁ = μ₂ 
B)  H₀: μD = 0 
C)  H₀: μ₁ - μ₂ = 0 
D)  H₀: either "a" or "c" above

Question 4

Which type of study uses the same subjects on more than one occasion?

Accepted Answer

A)  z-test 
B)  t test, independent samples design 
C)  t test, repeated measures design 
D)  one-sample t test 
A)  z-test 
B)  t test, independent samples design 
C)  t test, repeated measures design 
D)  one-sample t test

Question 5

Which of the assumptions below does not apply to a repeated measures t test?

Accepted Answer

A)  independent and random sampling 
B)  normal distribution of the dependent variable 
C)  measurement of the dependent variable on interval or ratio scales 
D)  homogeneity of variance 
A)  independent and random sampling 
B)  normal distribution of the dependent variable 
C)  measurement of the dependent variable on interval or ratio scales 
D)  homogeneity of variance

Question 6

Given: ∑D = 32, n = 8, and sD = 5, what is Cohen's d?

Accepted Answer

A)  4 
B)  .8 
C)  6.4 
D)  .4 
A)  4 
B)  .8 
C)  6.4 
D)  .4

Question 7

For the items below, indicate what type of t test is called for: a one-sample t test, an independent samples t test, or a repeated measures t test.
a. Motivation scores are measured for a sample of students before and after Spring Break.
b. University freshmen in the state of Minnesota have a mean score of 65 on a math test. A teacher has developed a new technique for teaching math and a sample of high school graduates completes the program over the summer. Before beginning their university studies, they are administered the math test to see if students who completed the program score higher than the state average.
c. The average number of times that females contribute to class discussions over the course of a semester is compared to the average number of times that males contribute.
d. The national average on a measure of Need for Achievement is 50. An Olympic coach believes that athletes training for the Olympics would score higher on this trait and so she administers the test to her trainees to compare.
e. A psychologist used the smile/frown technique to study the facial feedback hypothesis which proposes that feedback from the skeletal muscles in our face influences our emotional experience. The psychologist asked one group to rate the funniness of a packet of cartoons while holding a pencil between their teeth without touching their lips (as if to smile). Another group rated the same packet of cartoons while holding the pencil between their lips without touching their teeth (as if to frown).
f. An optimism test is given to military personnel upon their enlistment and then again at the end of their military service.

Accepted Answer

What type of t test:
a. repeat

Question 8

The emergence of self-recognition is sometimes studied using the red dot test in which a red dot is placed on a child's forehead or nose. The child is then placed in front of a mirror. If the child touches his or her nose rather than pointing at the mirror or looking behind it for someone, then self-recognition is inferred. A developmental psychologist conducts the red dot test by using a sample of 15 one-month-old babies and another sample of 18 month-old babies. What type of test was employed?

Accepted Answer

A)  z-test 
B)  one-sample t test 
C)  independent samples t test 
D)  repeated measures t test 
A)  z-test 
B)  one-sample t test 
C)  independent samples t test 
D)  repeated measures t test

Question 9

What are the assumptions for a two-sample t test, repeated measures design?

Accepted Answer

Assumptions for a two-sample t test, rep

Question 10

A repeated measures study involves

Accepted Answer

A)  two sets of scores from the same subjects. 
B)  two sets of scores from two different samples. 
C)  replicating a study to see if similar results are obtained. 
D)  participants doing the same task repeatedly. 
A)  two sets of scores from the same subjects. 
B)  two sets of scores from two different samples. 
C)  replicating a study to see if similar results are obtained. 
D)  participants doing the same task repeatedly.

Question 11

Given the summary values that follow for a repeated measures t test, calculate tobt: ∑D = 31, ∑D² = 331, n = 10.

Accepted Answer

Question 12

A researcher studying the psychological effects of color measures the blood pressure of a sample of 16 subjects while sitting in an all blue room. She then moves them to an all yellow room and takes their blood pressure again. What type of test was employed?

Accepted Answer

A)  z-test 
B)  one-sample t test 
C)  independent samples t test 
D)  repeated measures t test 
A)  z-test 
B)  one-sample t test 
C)  independent samples t test 
D)  repeated measures t test

Question 13

Which of the following will give you MD

Accepted Answer

A)  ∑D 
B)  ∑D² 
C)  ∑D/n 
D)  ∑D²/n 
A)  ∑D 
B)  ∑D² 
C)  ∑D/n 
D)  ∑D²/n

Question 14

Given an alpha level of .05 and n = 18, what would tcrit be for a nondirectional repeated measures test?

Accepted Answer

A)  ±1.746 
B)  ±2.120 
C)  ±1.740 
D)  ±2.110 
A)  ±1.746 
B)  ±2.120 
C)  ±1.740 
D)  ±2.110

Question 15

For the summary values that follow for a repeated measures t test, calculate:   ∑D = -21, ∑D² = 171, n = 6

Accepted Answer

The answer of For the summary values that follow for...

Question 16

Which of the following is one of the procedures involved in conducting a repeated measures t test?

Accepted Answer

A)  Each set of scores will be squared. 
B)  The pre-test scores are subtracted from the post-test scores. 
C)  Each set of scores will be added; the total of each will then be divided by n to arrive at a mean for each group. 
D)  The mean difference value is determined by dividing ∑D² by n. 
A)  Each set of scores will be squared. 
B)  The pre-test scores are subtracted from the post-test scores. 
C)  Each set of scores will be added; the total of each will then be divided by n to arrive at a mean for each group. 
D)  The mean difference value is determined by dividing ∑D² by n.

Question 17

Which is the correct Cohen d formula for a repeated measures t test?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 18

Given an alpha level of .01 and n = 22, what would tcrit be for a nondirectional repeated measures t test?

Accepted Answer

A)  -2.518 
B)  +2.518 
C)  ±2.831 
D)  either "a" or "b" above 
A)  -2.518 
B)  +2.518 
C)  ±2.831 
D)  either "a" or "b" above

Question 19

For a repeated measures t test, the null hypothesis attributes

Accepted Answer

A)  mean differences between pre- and post-test scores to random sampling error. 
B)  any differences between the means for group 1 and group 2 to random sampling error. 
C)  mean differences between pre- and post-test scores to the effects of an independent variable. 
D)  any differences between the means for group 1 and group 2 to the effects of an independent variable. 
A)  mean differences between pre- and post-test scores to random sampling error. 
B)  any differences between the means for group 1 and group 2 to random sampling error. 
C)  mean differences between pre- and post-test scores to the effects of an independent variable. 
D)  any differences between the means for group 1 and group 2 to the effects of an independent variable.

Question 20

Given ∑D = 64, n = 9, and sD = 8, what is ?

Accepted Answer

A)  8 
B)  7.11 
C)  2.67 
D)  .88 
A)  8 
B)  7.11 
C)  2.67 
D)  .88

A repeated measures study is

Which of the following is the correct notation for the null hypothesis of a repeated measures t test for which the alternative hypothesis is nondirectional?

Which type of study uses the same subjects on more than one occasion?

Which of the assumptions below does not apply to a repeated measures t test?

Given: ∑D = 32, n = 8, and s_D = 5, what is Cohen's d?

What are the assumptions for a two-sample t test, repeated measures design?

A repeated measures study involves

Given the summary values that follow for a repeated measures t test, calculate t_obt: ∑D = 31, ∑D² = 331, n = 10.

A researcher studying the psychological effects of color measures the blood pressure of a sample of 16 subjects while sitting in an all blue room. She then moves them to an all yellow room and takes their blood pressure again. What type of test was employed?

Which of the following will give you M_D

Given an alpha level of .05 and n = 18, what would t_crit be for a nondirectional repeated measures test?

For the summary values that follow for a repeated measures t test, calculate: ∑D = -21, ∑D² = 171, n = 6

Which of the following is one of the procedures involved in conducting a repeated measures t test?

Which is the correct Cohen d formula for a repeated measures t test?

Given an alpha level of .01 and n = 22, what would t_crit be for a nondirectional repeated measures t test?

For a repeated measures t test, the null hypothesis attributes

Given ∑D = 64, n = 9, and s_D = 8, what is ?

Organizing Data Using Tables and Graphs

Measures of Central Tendency

Measures of Variability

Z-Scores and Other Standard Scores

Probability and the Normal Distribution

Sampling Distribution of Means

Hypothesis Testing

One-Sample T-Test

Two-Sample T-Test: Independent Samples Design

Confidence Interval Versus Point Estimation

One-Way Analysis of Variance

Factorial Analysis of Variance

Correlation and Regression

Chi-Square

Introduction to Statistics

Nonparametric Statistics for Ordinal Data

Filters

Exam 11: Two-Sample T-Test: Related Samples Design

A repeated measures study is

Which of the following is the correct notation for the null hypothesis of a repeated measures t test for which the alternative hypothesis is nondirectional?

Which type of study uses the same subjects on more than one occasion?

Which of the assumptions below does not apply to a repeated measures t test?

Given: ∑D = 32, n = 8, and sD = 5, what is Cohen's d?

What are the assumptions for a two-sample t test, repeated measures design?

A repeated measures study involves

Given the summary values that follow for a repeated measures t test, calculate tobt: ∑D = 31, ∑D² = 331, n = 10.

A researcher studying the psychological effects of color measures the blood pressure of a sample of 16 subjects while sitting in an all blue room. She then moves them to an all yellow room and takes their blood pressure again. What type of test was employed?

Which of the following will give you MD

Given an alpha level of .05 and n = 18, what would tcrit be for a nondirectional repeated measures test?

For the summary values that follow for a repeated measures t test, calculate: ∑D = -21, ∑D² = 171, n = 6

Which of the following is one of the procedures involved in conducting a repeated measures t test?

Which is the correct Cohen d formula for a repeated measures t test?

Given an alpha level of .01 and n = 22, what would tcrit be for a nondirectional repeated measures t test?

For a repeated measures t test, the null hypothesis attributes

Given ∑D = 64, n = 9, and sD = 8, what is ?

Organizing Data Using Tables and Graphs

Measures of Central Tendency

Measures of Variability

Z-Scores and Other Standard Scores

Probability and the Normal Distribution

Sampling Distribution of Means

Hypothesis Testing

One-Sample T-Test

Two-Sample T-Test: Independent Samples Design

Confidence Interval Versus Point Estimation

One-Way Analysis of Variance

Factorial Analysis of Variance

Correlation and Regression

Chi-Square

Introduction to Statistics

Nonparametric Statistics for Ordinal Data

Filters

Given: ∑D = 32, n = 8, and s_D = 5, what is Cohen's d?

Given the summary values that follow for a repeated measures t test, calculate t_obt: ∑D = 31, ∑D² = 331, n = 10.

Which of the following will give you M_D

Given an alpha level of .05 and n = 18, what would t_crit be for a nondirectional repeated measures test?

Given an alpha level of .01 and n = 22, what would t_crit be for a nondirectional repeated measures t test?

Given ∑D = 64, n = 9, and s_D = 8, what is ?