Question 1

You run a t-test and find that your results indicate that t₍₂₆₎ = 3.13, p < .05.You determine that you should ______.

Accepted Answer

A) fail to reject the null hypothesis 
B) reject the null hypothesis 
C) ignore the null hypothesis 
D) fail to ignore the null hypothesis 
A) fail to reject the null hypothesis 
B) reject the null hypothesis 
C) ignore the null hypothesis 
D) fail to ignore the null hypothesis

Question 2

You run a t-test and find that your results indicate that t₍₃₈₎ = 4.15, p < .05.You determine that you should ______.

Accepted Answer

A) fail to reject the null hypothesis 
B) reject the null hypothesis 
C) ignore the null hypothesis 
D) fail to ignore the null hypothesis 
A) fail to reject the null hypothesis 
B) reject the null hypothesis 
C) ignore the null hypothesis 
D) fail to ignore the null hypothesis

Question 3

You run a t-test and find that your results indicate that t₍₃₂₎ = 1.13, p > .05.You determine that you should ______.

Accepted Answer

A) fail to reject the null hypothesis 
B) reject the null hypothesis 
C) ignore the null hypothesis 
D) fail to ignore the null hypothesis 
A) fail to reject the null hypothesis 
B) reject the null hypothesis 
C) ignore the null hypothesis 
D) fail to ignore the null hypothesis

Question 4

In the following, what is the number of 5.5015: 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 5

In the formula that computes a t value, what does ΣD represent?

Accepted Answer

A) sum of the differences between groups of scores 
B) sum of the means for Group 1 
C) sum of the means for Group 2 
D) sum of the squared differences 
A) sum of the differences between groups of scores 
B) sum of the means for Group 1 
C) sum of the means for Group 2 
D) sum of the squared differences

Question 6

If you are hypothesizing 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 7

When calculating a dependent-samples t-test, the order in which you input the posttest score and pretest score can change the t value.If you input the pretest first, the obtained value will be _______.

Accepted Answer

A) positive 
B) negative 
C) neutral 
D) invalid 
A) positive 
B) negative 
C) neutral 
D) invalid

Question 8

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

Accepted Answer

A) reject the null hypothesis 
B) accept the null hypothesis 
C) set a higher p value 
D) increase the sample size 
A) reject the null hypothesis 
B) accept the null hypothesis 
C) set a higher p value 
D) increase the sample size

Question 9

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 10

What is the difference between a t-test for independent samples and a t-test for dependent samples?

Accepted Answer

A t-test for independent samples compare

Question 11

When doing a t-test for dependent samples, when would you accept the null hypothesis?

Accepted Answer

The null hypothesis is accepted if the o

Question 12

In the equation t₍₇₈₎ = 1.03, p < .01, the number of .01 refers to significance level.

Accepted Answer

A) True 
 B)False

Question 13

In the following, what is the meaning of t: 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 14

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

Accepted Answer

A) True 
 B)False

Question 15

How many subjects were examined based on the following: t₍₂₉₎ = 2.001, p < .05?

Accepted Answer

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

Question 16

You run a t-test and find that your results indicate that t₍₃₈₎ = 1.13, p > .05.You determine that you should ______.

Accepted Answer

A) fail to reject the null hypothesis 
B) reject the null hypothesis 
C) ignore the null hypothesis 
D) fail to ignore the null hypothesis 
A) fail to reject the null hypothesis 
B) reject the null hypothesis 
C) ignore the null hypothesis 
D) fail to ignore the null hypothesis

Question 17

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

Accepted Answer

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

Question 18

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

Accepted Answer

A) reject the null hypothesis 
B) accept the null hypothesis 
C) set a higher p value 
D) increase the sample size 
A) reject the null hypothesis 
B) accept the null hypothesis 
C) set a higher p value 
D) increase the sample size

Question 19

To determine if you should accept a null hypothesis, you should 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 20

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

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

You run a t-test and find that your results indicate that t₍₂₆₎ = 3.13, p < .05.You determine that you should ______.

You run a t-test and find that your results indicate that t₍₃₈₎ = 4.15, p < .05.You determine that you should ______.

You run a t-test and find that your results indicate that t₍₃₂₎ = 1.13, p > .05.You determine that you should ______.

In the following, what is the number of 5.5015: t₍₅₈₎ = 5.015, p < .01?

In the formula that computes a t value, what does ΣD represent?

If you are hypothesizing that posttest scores will be higher than pretest scores, you should use _______.

When calculating a dependent-samples t-test, the order in which you input the posttest score and pretest score can change the t value.If you input the pretest first, the obtained value will be _______.

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

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

What is the difference between a t-test for independent samples and a t-test for dependent samples?

When doing a t-test for dependent samples, when would you accept the null hypothesis?

In the equation t₍₇₈₎ = 1.03, p < .01, the number of .01 refers to significance level.

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

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

How many subjects were examined based on the following: t₍₂₉₎ = 2.001, p < .05?

You run a t-test and find that your results indicate that t₍₃₈₎ = 1.13, p > .05.You determine that you should ______.

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

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

To determine if you should accept a null hypothesis, you should compare the ______ value and the ______ value.

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

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To determine if you should accept a null hypothesis, you should compare the value and the value.