Question 1

In a t test for dependent samples that examines the difference between a pretest and posttest,what type of hypothesis is used?

Accepted Answer

A) nondirectional 
B) directional 
C) null hypothesis 
D) experimental 
A) nondirectional 
B) directional 
C) null hypothesis 
D) experimental B

Question 2

When running a t test for dependent means on a group of 96 individuals,the degrees of freedom will be ______.

Accepted Answer

A) 94 
B) 95 
C) 96 
D) 90 
A) 94 
B) 95 
C) 96 
D) 90 B

Question 3

Dr.Moo would like to find out if participants who love cats receive more speeding tickets than participants who love dogs.Identify the type of test she would need to use to determine this,and explain your answer.

Accepted Answer

Dr.Moo should use an independent-samples t test because she would like to find out if there are differences in the amount of speeding tickets received between two independent groups.

Question 4

To determine whether to reject a null hypothesis,compare the ______ value and the ______ value.

Accepted Answer

A) estimated;reliable 
B) obtained;estimated 
C) valid;invalid 
D) obtained;critical 
A) estimated;reliable 
B) obtained;estimated 
C) valid;invalid 
D) obtained;critical

Question 5

The test statistic calculated by the statistical procedure selected is known as the ______.

Accepted Answer

A) critical value 
B) significance level 
C) obtained value 
D) p value 
A) critical value 
B) significance level 
C) obtained value 
D) p value

Question 6

Provide an example of a study that would be analyzed using a t test for dependent samples.

Accepted Answer

The following is an example of when a t

Question 7

The t test for dependent means is also known as the t test for correlated samples.

Accepted Answer

A) True 
 B)False

Question 8

How many subjects were examined based on the following: t(29) = 2.001,p < 0.05?

Accepted Answer

A) 32 
B) 31 
C) 30 
D) 29 
A) 32 
B) 31 
C) 30 
D) 29

Question 9

If the obtained value in a dependent-samples t test exceeds the critical value,the null hypothesis must be accepted.

Accepted Answer

A) True 
 B)False

Question 10

When you hypothesize that posttest scores will be higher than pretest scores,you should use ______.

Accepted Answer

A) a one-tailed test 
B) a two-tailed test 
C) descriptive statistics 
D) a t test for independent means 
A) a one-tailed test 
B) a two-tailed test 
C) descriptive statistics 
D) a t test for independent means

Question 11

In the formula for the t test for dependent means,what does the n represent?

Accepted Answer

A) sum of the means 
B) number of participants 
C) number of pairs of observations 
D) sum of all scores 
A) sum of the means 
B) number of participants 
C) number of pairs of observations 
D) sum of all scores

Question 12

Which statistical technique is used to examine one group of subjects under two different conditions?

Accepted Answer

A) regression 
B) dependent-samples t test 
C) analysis of variance 
D) independent-samples t test 
A) regression 
B) dependent-samples t test 
C) analysis of variance 
D) independent-samples t test

Question 13

In hypothesis testing,the test statistic must be compared against the obtained value.

Accepted Answer

A) True 
 B)False

Question 14

In hypothesis testing,the test statistic must be compared against the critical value.

Accepted Answer

A) True 
 B)False

Question 15

If the critical value is greater than the obtained value,what should you do?

Accepted Answer

A) Reject the null hypothesis. 
B) Accept the null hypothesis. 
C) Accept the research hypothesis. 
D) Decrease your p value. 
A) Reject the null hypothesis. 
B) Accept the null hypothesis. 
C) Accept the research hypothesis. 
D) Decrease your p value.

Question 16

What is the numerator of the t test in the dependent-means formula?

Accepted Answer

A) $\Sigma$D 
B) n 
C) M1 - M2 
D) $\Sigma$D2 (n - 1) 
A) $\Sigma$D 
B) n 
C) M1 - M2 
D) $\Sigma$D2 (n - 1)

Question 17

The t test for dependent means is used when your sample is tested ______.

Accepted Answer

A) one time 
B) one or more times 
C) two times 
D) two or more times 
A) one time 
B) one or more times 
C) two times 
D) two or more times

Question 18

In hypothesis testing,the test statistic must be compared against the ______.

Accepted Answer

A) critical value 
B) significance level 
C) obtained value 
D) p value 
A) critical value 
B) significance level 
C) obtained value 
D) p value

Question 19

In the equation t(78) = 1.03,p < 0.01,what does p < 0.01 represent?

Accepted Answer

A) the obtained value 
B) the critical value 
C) the degrees of freedom 
D) the level of significance 
A) the obtained value 
B) the critical value 
C) the degrees of freedom 
D) the level of significance

Question 20

Under what circumstances would you use a t test for dependent samples?

Accepted Answer

A t test for dependent samples

In a t test for dependent samples that examines the difference between a pretest and posttest,what type of hypothesis is used?

When running a t test for dependent means on a group of 96 individuals,the degrees of freedom will be ______.

Dr.Moo would like to find out if participants who love cats receive more speeding tickets than participants who love dogs.Identify the type of test she would need to use to determine this,and explain your answer.

To determine whether to reject a null hypothesis,compare the value and the value.

The test statistic calculated by the statistical procedure selected is known as the ______.

Provide an example of a study that would be analyzed using a t test for dependent samples.

The t test for dependent means is also known as the t test for correlated samples.

How many subjects were examined based on the following: t₍₂₉₎ = 2.001,p < 0.05?

If the obtained value in a dependent-samples t test exceeds the critical value,the null hypothesis must be accepted.

When you hypothesize that posttest scores will be higher than pretest scores,you should use ______.

In the formula for the t test for dependent means,what does the n represent?

Which statistical technique is used to examine one group of subjects under two different conditions?

In hypothesis testing,the test statistic must be compared against the obtained value.

In hypothesis testing,the test statistic must be compared against the critical value.

If the critical value is greater than the obtained value,what should you do?

What is the numerator of the t test in the dependent-means formula?

The t test for dependent means is used when your sample is tested ______.

In hypothesis testing,the test statistic must be compared against the ______.

In the equation t₍₇₈₎ = 1.03,p < 0.01,what does p < 0.01 represent?

Under what circumstances would you use a t test for dependent samples?

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Exam 12: Teafor Two Again: Tests Between the Means of Related Groups

In a t test for dependent samples that examines the difference between a pretest and posttest,what type of hypothesis is used?

When running a t test for dependent means on a group of 96 individuals,the degrees of freedom will be ______.

Dr.Moo would like to find out if participants who love cats receive more speeding tickets than participants who love dogs.Identify the type of test she would need to use to determine this,and explain your answer.

To determine whether to reject a null hypothesis,compare the ______ value and the ______ value.

The test statistic calculated by the statistical procedure selected is known as the ______.

Provide an example of a study that would be analyzed using a t test for dependent samples.

The t test for dependent means is also known as the t test for correlated samples.

How many subjects were examined based on the following: t(29) = 2.001,p < 0.05?

If the obtained value in a dependent-samples t test exceeds the critical value,the null hypothesis must be accepted.

When you hypothesize that posttest scores will be higher than pretest scores,you should use ______.

In the formula for the t test for dependent means,what does the n represent?

Which statistical technique is used to examine one group of subjects under two different conditions?

In hypothesis testing,the test statistic must be compared against the obtained value.

In hypothesis testing,the test statistic must be compared against the critical value.

If the critical value is greater than the obtained value,what should you do?

What is the numerator of the t test in the dependent-means formula?

The t test for dependent means is used when your sample is tested ______.

In hypothesis testing,the test statistic must be compared against the ______.

In the equation t(78) = 1.03,p < 0.01,what does p < 0.01 represent?

Under what circumstances would you use a t test for dependent samples?

Statistics or Sadistics Its up to You

Means to an End: Computing and Understanding Averages

Understanding Variability: Vive La Différence

A Picture Really Is Worth a Thousand Words

Computing Correlation Coefficients: Ice Cream and Crime

Understanding Reliability and Validity: Just the Truth

Hypotheticals and You: Testing Your Questions

Probability and Why It Counts: Fun With a Bell-Shaped Curve

Significantly Significant: What It Means for You and Me

Only the Lonely: the One Sample Z-Test

Teafor Two: Tests Between the Means of Different Groups

Two Groups Too Many Try Analysis of Variance

Two Too Many Factors: Factorial Analysis of Variancea Brief Introduction

Testing Relationships Using the Correlation Coefficients: Cousins or Just Good Friends

Using Linear Regression: Predicting Wholl Win the Super Bowl

Chi-Square and Some Other Nonparametric Tests: What to Do When Youre Not Normal

Some Other Importantstatistical Procedures You Should Know About

An Introduction to Data Mining

Filters

To determine whether to reject a null hypothesis,compare the value and the value.

How many subjects were examined based on the following: t₍₂₉₎ = 2.001,p < 0.05?

In the equation t₍₇₈₎ = 1.03,p < 0.01,what does p < 0.01 represent?