Question 1

Interpret, in words, what it means for a research question that a null hypothesis was accepted.

Accepted Answer

When the null hypothesis in a dependent-

Question 2

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

Accepted Answer

A) True 
 B)False

Question 3

What is another name for a dependent-samples t-test?

Accepted Answer

A) single sample 
B) double measures 
C) repeated measures 
D) freed sample 
A) single sample 
B) double measures 
C) repeated measures 
D) freed sample

Question 4

Interpret, in words, what it means for a research question that a null hypothesis was rejected.

Accepted Answer

The null hypothesis is rejected if the o

Question 5

Based on 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 6

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

Question 7

Which of the following relates to the difference you expect when conducting a t-test?

Accepted Answer

A) hypothesized mean difference 
B) Pearson correlation 
C) observations 
D) variance 
A) hypothesized mean difference 
B) Pearson correlation 
C) observations 
D) variance

Question 8

If you are running a t-test for dependent means on a group of 114 individuals, your degrees of freedom will be _______.

Accepted Answer

A) 113 
B) 112 
C) 114 
D) 115 
A) 113 
B) 112 
C) 114 
D) 115

Question 9

In order to be 99% confident you have not committed a Type I error, at what level should you set your p value?

Accepted Answer

A) .01 
B) .05 
C) .10 
D) .15 
A) .01 
B) .05 
C) .10 
D) .15

Question 10

In a t-test for dependent means, the research hypothesis could look like this:
A)
B)
C)
D)

Accepted Answer

The answer of In a t-test for dependent means, the...

Question 11

Dr.Moo's student, Mr.Grass, is working on a research project but is unsure of how to analyze his data.He would like to find out if goats produce more milk after going through a new relaxation program for goats, the Goatness Gracious program.He measured the amount of goat's milk produced before Goatness Gracious and would like to compare this with the amount of goat's milk produced after Goatness Gracious.Identify the type of test he would need to use to determine this, and explain your answer.

Accepted Answer

Mr.Grass should use a dependent-samples

Question 12

When using a t-test for dependent means, what is true of the sample?

Accepted Answer

A) There are two different groups. 
B) They are the same group. 
C) There are more than 50. 
D) They are observed once. 
A) There are two different groups. 
B) They are the same group. 
C) There are more than 50. 
D) They are observed once.

Question 13

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 14

If your degrees of freedom is 24, your sample size when conducting a t-test for dependent means must be _______.

Accepted Answer

A) 23 
B) 25 
C) 26 
D) 24 
A) 23 
B) 25 
C) 26 
D) 24

Question 15

In the equation t₍₇₈₎ = 1.03, p < .01, what does 1.03 represent?

Accepted Answer

A) test statistic 
B) degrees of freedom 
C) obtained value 
D) alpha level 
A) test statistic 
B) degrees of freedom 
C) obtained value 
D) alpha level

Question 16

When considering a t-test for dependent samples, what is a D² score?

Accepted Answer

The D² score is the

Question 17

In order to determine whether or not you will reject the null hypothesis, 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 18

In the following, what is the number of .01: t₍₅₈₎ = 5.015, p < .01?

Accepted Answer

A) test statistic 
B) t value 
C) degrees of freedom 
D) significance level 
A) test statistic 
B) t value 
C) degrees of freedom 
D) significance level

Question 19

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 20

How many observations are there for each case in a t-test for dependent samples?

Accepted Answer

A) one 
B) two 
C) three 
D) more than three 
A) one 
B) two 
C) three 
D) more than three

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

Interpret, in words, what it means for a research question that a null hypothesis was accepted.

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

What is another name for a dependent-samples t-test?

Interpret, in words, what it means for a research question that a null hypothesis was rejected.

Based on the formula for the t-test for dependent means, what does the n represent?

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

Which of the following relates to the difference you expect when conducting a t-test?

If you are running a t-test for dependent means on a group of 114 individuals, your degrees of freedom will be _______.

In order to be 99% confident you have not committed a Type I error, at what level should you set your p value?

In a t-test for dependent means, the research hypothesis could look like this: A) B) C) D)

When using a t-test for dependent means, what is true of the sample?

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

If your degrees of freedom is 24, your sample size when conducting a t-test for dependent means must be _______.

In the equation t₍₇₈₎ = 1.03, p < .01, what does 1.03 represent?

When considering a t-test for dependent samples, what is a D² score?

In order to determine whether or not you will reject the null hypothesis, the test statistic must be compared against the _______.

In the following, what is the number of .01: t₍₅₈₎ = 5.015, p < .01?

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

How many observations are there for each case in a t-test for dependent samples?

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