Question 1

For the related samples t test,assuming that all other values remain constant,then as samples size increases,

Accepted Answer

A) the value of the test statistic increases 
B) the power to detect an effect increases 
C) the estimate for standard error decreases 
D) all of the above 
A) the value of the test statistic increases 
B) the power to detect an effect increases 
C) the estimate for standard error decreases 
D) all of the above

Question 2

The test statistic for the related samples t test is equivalent to the test statistic for the two-independent sample t test.

Accepted Answer

A) True 
 B)False

Question 3

Two researchers analyze the same data set.Researcher A uses a two-independent sample t test and decides to retain the null hypothesis.Researcher B uses a related samples t test and decides to reject the null hypothesis.Which of the following is a likely explanation for the disparity in the decisions made.

Accepted Answer

A) The two-independent sample t test had greater power to detect the effect. 
B) The two-independent sample t test was associated with fewer degrees of freedom. 
C) The related samples t test had greater power to detect the effect. 
D) The related samples t test was associated with more degrees of freedom. 
A) The two-independent sample t test had greater power to detect the effect. 
B) The two-independent sample t test was associated with fewer degrees of freedom. 
C) The related samples t test had greater power to detect the effect. 
D) The related samples t test was associated with more degrees of freedom.

Question 4

Selecting related samples minimizes standard error and increases power.

Accepted Answer

A) True 
 B)False

Question 5

All other things being equal,as the sample size increases,what happens to the critical value for a related samples t test (or for any t test,for that matter)?

Accepted Answer

A) The critical value increases. 
B) The critical value decreases. 
C) The critical value does not change. 
D) It depends on the value of the test statistic. 
A) The critical value increases. 
B) The critical value decreases. 
C) The critical value does not change. 
D) It depends on the value of the test statistic.

Question 6

All other things being equal,reducing the level of significance from .05 to .01 will ________ the value of the test statistic for a related samples t test.

Accepted Answer

A) increase 
B) decrease 
C) have no effect on 
A) increase 
B) decrease 
C) have no effect on

Question 7

If a related samples t test is significant,then it will also be associated with a large effect size.

Accepted Answer

A) True 
 B)False

Question 8

The assumptions for a related samples t test apply to both the repeated measures and matched-pairs designs.

Accepted Answer

A) True 
 B)False

Question 9

The decision is to reject the null hypothesis for the following related samples t test: t(23)= 3.02,p < .05 (d = .18).

Accepted Answer

A) True 
 B)False

Question 10

A researcher selects a sample of 24 college students and has them rate their liking for two advertisements aimed at improving the image of the college.The researcher finds that liking ratings significantly differed,t = 2.900.Use omega-squared to compute the proportion of variance for this result.

Accepted Answer

A)    = 0.29 
B)    = 0.24 
C)    = 0.21 
D) There is not enough information to answer this question. 
A)    = 0.29 
B)    = 0.24 
C)    = 0.21 
D) There is not enough information to answer this question.

Question 11

One difference between a repeated measures design and a matched samples design is that

Accepted Answer

A) only one design is a type of related sample design 
B) only one design increases the power to observe an effect 
C) only one design involves observing the same participants in each group 
D) only one design eliminates between-persons variability 
A) only one design is a type of related sample design 
B) only one design increases the power to observe an effect 
C) only one design involves observing the same participants in each group 
D) only one design eliminates between-persons variability

Question 12

Which of the following is the denominator of the test statistic for the related samples t test?

Accepted Answer

A) standard error 
B) estimated standard error 
C) estimated standard error for the difference 
D) estimated standard error for difference scores 
A) standard error 
B) estimated standard error 
C) estimated standard error for the difference 
D) estimated standard error for difference scores

Question 13

The estimated Cohen's d for the related samples t test uses the sample standard deviation for difference scores as an estimate of the standard deviation of difference scores in the population.

Accepted Answer

A) True 
 B)False

Question 14

Each of the following is an advantage for using the related samples design,except

Accepted Answer

A) it can be more practical 
B) it minimizes standard error 
C) it increases the power of a research design 
D) it increases the variability measured in a study 
A) it can be more practical 
B) it minimizes standard error 
C) it increases the power of a research design 
D) it increases the variability measured in a study

Question 15

All other things being equal,increasing the sample size will ________ the value of the test statistic for a related samples t test.

Accepted Answer

A) increase 
B) decrease 
C) have no effect on 
A) increase 
B) decrease 
C) have no effect on

Question 16

A researcher records the strength of a conditioned response among 12 rats in the presence and absence of conditioned cues.If he computes a related samples t test at a .05 level of significance (two-tailed test),then what are the critical values for this test?

Accepted Answer

A) ±2.201 
B) ±2.179 
C) ±1.796 
D) ±1.782 
A) ±2.201 
B) ±2.179 
C) ±1.796 
D) ±1.782

Question 17

A researcher records the level of attention among 18 students during an interactive and lecture portion of a single class.If she computes a related samples t test at a .05 level of significance (two-tailed test),then what is the critical value for this test?

Accepted Answer

A) ±1.734 
B) ±1.740 
C) ±2.110 
D) ±2.101 
A) ±1.734 
B) ±1.740 
C) ±2.110 
D) ±2.101

Question 18

A type of related samples design in which participants are observed more than once is called a

Accepted Answer

A) repeated measures design 
B) matched pairs design 
C) matched samples design 
D) both B and C 
A) repeated measures design 
B) matched pairs design 
C) matched samples design 
D) both B and C

Question 19

Each of the following is an estimate of error for a t test,except

Accepted Answer

A) standard error 
B) estimated standard error 
C) estimated standard error for the difference 
D) estimated standard error for difference scores 
A) standard error 
B) estimated standard error 
C) estimated standard error for the difference 
D) estimated standard error for difference scores

Question 20

"Elementary school children spent significantly more time reading the presence of a teacher than when the teacher was absent,t(7)= 2.804,p 2=0.46)." In this related samples t test,how many participants were observed?

Accepted Answer

A) 5 
B) 6 
C) 7 
D) 8 
A) 5 
B) 6 
C) 7 
D) 8

For the related samples t test,assuming that all other values remain constant,then as samples size increases,

The test statistic for the related samples t test is equivalent to the test statistic for the two-independent sample t test.

Selecting related samples minimizes standard error and increases power.

All other things being equal,as the sample size increases,what happens to the critical value for a related samples t test (or for any t test,for that matter)?

All other things being equal,reducing the level of significance from .05 to .01 will ________ the value of the test statistic for a related samples t test.

If a related samples t test is significant,then it will also be associated with a large effect size.

The assumptions for a related samples t test apply to both the repeated measures and matched-pairs designs.

The decision is to reject the null hypothesis for the following related samples t test: t(23)= 3.02,p < .05 (d = .18).

A researcher selects a sample of 24 college students and has them rate their liking for two advertisements aimed at improving the image of the college.The researcher finds that liking ratings significantly differed,t = 2.900.Use omega-squared to compute the proportion of variance for this result.

One difference between a repeated measures design and a matched samples design is that

Which of the following is the denominator of the test statistic for the related samples t test?

The estimated Cohen's d for the related samples t test uses the sample standard deviation for difference scores as an estimate of the standard deviation of difference scores in the population.

Each of the following is an advantage for using the related samples design,except

All other things being equal,increasing the sample size will ________ the value of the test statistic for a related samples t test.

A researcher records the strength of a conditioned response among 12 rats in the presence and absence of conditioned cues.If he computes a related samples t test at a .05 level of significance (two-tailed test),then what are the critical values for this test?

A researcher records the level of attention among 18 students during an interactive and lecture portion of a single class.If she computes a related samples t test at a .05 level of significance (two-tailed test),then what is the critical value for this test?

A type of related samples design in which participants are observed more than once is called a

Each of the following is an estimate of error for a t test,except

"Elementary school children spent significantly more time reading the presence of a teacher than when the teacher was absent,t(7)= 2.804,p < .05 ( $\omega$ ²=0.46)." In this related samples t test,how many participants were observed?

Introduction to Statistics

Summarizing Data: Frequency Distributions in

Summarizing Data: Central Tendency

Summarizing Data: Variability

Probability, Normal Distributions, and Z Scores

Characteristics of the Sample Mean

Hypothesis Testing: Significance, Effect Size, and Power

Testing Means: One-Sample T Test With Confidence Intervals

Testing Means: Two- Independent-Sample T Test With Confidence Intervals

One-Way Analysis of Variance: Between- Subjects and Within- Subjects Repeated- Measures Designs

Two-Way Analysis of Variance: Between-Subjects Factorial Design

Correlation and Linear Regression

Chi-Square Tests: Goodness of Fit and the Test for Independence

Nonparametric Tests for Ordinal Data: Understanding and Interpretation

Chi-Square Tests: Goodness-of-Fit and Independence

Understanding Regression Analysis

Understanding Correlation Coefficients in Statistical Analysis

Filters

Exam 10: Testing Means: Related-Samples T Test With Confidence Intervals

For the related samples t test,assuming that all other values remain constant,then as samples size increases,

The test statistic for the related samples t test is equivalent to the test statistic for the two-independent sample t test.

Selecting related samples minimizes standard error and increases power.

All other things being equal,as the sample size increases,what happens to the critical value for a related samples t test (or for any t test,for that matter)?

All other things being equal,reducing the level of significance from .05 to .01 will ________ the value of the test statistic for a related samples t test.

If a related samples t test is significant,then it will also be associated with a large effect size.

The assumptions for a related samples t test apply to both the repeated measures and matched-pairs designs.

The decision is to reject the null hypothesis for the following related samples t test: t(23)= 3.02,p < .05 (d = .18).

A researcher selects a sample of 24 college students and has them rate their liking for two advertisements aimed at improving the image of the college.The researcher finds that liking ratings significantly differed,t = 2.900.Use omega-squared to compute the proportion of variance for this result.

One difference between a repeated measures design and a matched samples design is that

Which of the following is the denominator of the test statistic for the related samples t test?

The estimated Cohen's d for the related samples t test uses the sample standard deviation for difference scores as an estimate of the standard deviation of difference scores in the population.

Each of the following is an advantage for using the related samples design,except

All other things being equal,increasing the sample size will ________ the value of the test statistic for a related samples t test.

A researcher records the strength of a conditioned response among 12 rats in the presence and absence of conditioned cues.If he computes a related samples t test at a .05 level of significance (two-tailed test),then what are the critical values for this test?

A researcher records the level of attention among 18 students during an interactive and lecture portion of a single class.If she computes a related samples t test at a .05 level of significance (two-tailed test),then what is the critical value for this test?

A type of related samples design in which participants are observed more than once is called a

Each of the following is an estimate of error for a t test,except

"Elementary school children spent significantly more time reading the presence of a teacher than when the teacher was absent,t(7)= 2.804,p < .05 ( ω \omega ω 2=0.46)." In this related samples t test,how many participants were observed?

Introduction to Statistics

Summarizing Data: Frequency Distributions in

Summarizing Data: Central Tendency

Summarizing Data: Variability

Probability, Normal Distributions, and Z Scores

Characteristics of the Sample Mean

Hypothesis Testing: Significance, Effect Size, and Power

Testing Means: One-Sample T Test With Confidence Intervals

Testing Means: Two- Independent-Sample T Test With Confidence Intervals

One-Way Analysis of Variance: Between- Subjects and Within- Subjects Repeated- Measures Designs

Two-Way Analysis of Variance: Between-Subjects Factorial Design

Correlation and Linear Regression

Chi-Square Tests: Goodness of Fit and the Test for Independence

Nonparametric Tests for Ordinal Data: Understanding and Interpretation

Chi-Square Tests: Goodness-of-Fit and Independence

Understanding Regression Analysis

Understanding Correlation Coefficients in Statistical Analysis

Filters

"Elementary school children spent significantly more time reading the presence of a teacher than when the teacher was absent,t(7)= 2.804,p < .05 ( $\omega$ ²=0.46)." In this related samples t test,how many participants were observed?