Question 1

If your sample mean is 10, your population average is 15, and your standard error of the mean is 10, what is your observed z value?

Accepted Answer

A) 2.5 
B) −0.5 
C) −2 
D) 2 
A) 2.5 
B) −0.5 
C) −2 
D) 2 B

Question 2

In the effect size formula, what does σ stand for?

Accepted Answer

A) the sample mean 
B) effect size 
C) the population mean 
D) the population standard deviation 
A) the sample mean 
B) effect size 
C) the population mean 
D) the population standard deviation D

Question 3

According to your text, there are eight steps that you should follow in order to compute and interpret a Z-test statistic manually.

Accepted Answer

A) True 
 B)False  True

Question 4

The standard error of the mean is the best estimate that we can come up with given that it is impossible to compute ______.

Accepted Answer

A) all of the possible means 
B) all of the possible standard deviations 
C) all of the possible variances 
D) all of the possible medians 
A) all of the possible means 
B) all of the possible standard deviations 
C) all of the possible variances 
D) all of the possible medians

Question 5

Dr.Meow teaches Engineering Science 101 and is interested in finding out whether her students perform better on math tests compared to all of the engineering students in the university.State this as a research hypothesis.

Accepted Answer

Dr.Meow's students p

Question 6

SPSS does not offer a one-sample t-test.

Accepted Answer

A) True 
 B)False

Question 7

If you have a population standard deviation of 9 and a sample size of 81, what is your standard error of the mean?

Accepted Answer

A) −3 
B) 2 
C) 1 
D) 9 
A) −3 
B) 2 
C) 1 
D) 9

Question 8

Effect size is a measure of how different two groups are from one another.

Accepted Answer

A) True 
 B)False

Question 9

After conducting a one-sample Z-test, you arrived at a value of 5.7 for the z value.What is your conclusion?

Accepted Answer

A) reject the null hypothesis 
B) accept the null hypothesis 
C) the result is too close to call 
D) one of these 
A) reject the null hypothesis 
B) accept the null hypothesis 
C) the result is too close to call 
D) one of these

Question 10

If you have a population standard deviation of 10 and a sample size of 4, what is your standard error of the mean?

Accepted Answer

A) −5 
B) 14 
C) 6 
D) 5 
A) −5 
B) 14 
C) 6 
D) 5

Question 11

If you have a population standard deviation of 18 and a sample size of 9, what is your standard error of the mean?

Accepted Answer

A) −3 
B) 11 
C) 6 
D) 5 
A) −3 
B) 11 
C) 6 
D) 5

Question 12

If your sample mean is 11, your population average is 17, and your standard error of the mean is 3, what is your observed z value?

Accepted Answer

A) 14 
B) 8 
C) −2 
D) 2.2 
A) 14 
B) 8 
C) −2 
D) 2.2

Question 13

The _______ is the standard deviation of all possible means selected from the population.

Accepted Answer

A) standard error of the mean 
B) standard error of the median 
C) standard error of the population 
D) standard error of the sample 
A) standard error of the mean 
B) standard error of the median 
C) standard error of the population 
D) standard error of the sample

Question 14

Calculating the one-sample Z-test serves to give you _______.

Accepted Answer

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

Question 15

If your sample mean is 25, your population average is 5, and your standard error of the mean is 10, what is your observed z value?

Accepted Answer

A) 5 
B) 2.5 
C) −2 
D) 2 
A) 5 
B) 2.5 
C) −2 
D) 2

Question 16

What is effect size?

Accepted Answer

Effect size is a measure of ho

Question 17

Dr.Meow teaches Engineering Science 101 and is interested in finding out whether her students perform better on math tests compared to all of the engineering students in the university.State this as a null hypothesis.

Accepted Answer

Dr.Meow's students do not perf

Question 18

If you have a sample size of 16 and a population standard deviation of 40, what is your standard error of the mean?

Accepted Answer

A) −10 
B) 10 
C) 5 
D) −5 
A) −10 
B) 10 
C) 5 
D) −5

Question 19

SPSS does not offer a one-sample Z-test.

Accepted Answer

A) True 
 B)False

Question 20

SPSS does not offer a ______.

Accepted Answer

A) one-sample t-test 
B) one-sample Z-test 
C) one-sample F-test 
D) one-sample Chi-square test 
A) one-sample t-test 
B) one-sample Z-test 
C) one-sample F-test 
D) one-sample Chi-square test

Exam 10: Only the Lonely: The One Sample Z-Test

If your sample mean is 10, your population average is 15, and your standard error of the mean is 10, what is your observed z value?

In the effect size formula, what does σ stand for?

According to your text, there are eight steps that you should follow in order to compute and interpret a Z-test statistic manually.

The standard error of the mean is the best estimate that we can come up with given that it is impossible to compute ______.

Dr.Meow teaches Engineering Science 101 and is interested in finding out whether her students perform better on math tests compared to all of the engineering students in the university.State this as a research hypothesis.

SPSS does not offer a one-sample t-test.

If you have a population standard deviation of 9 and a sample size of 81, what is your standard error of the mean?

Effect size is a measure of how different two groups are from one another.

After conducting a one-sample Z-test, you arrived at a value of 5.7 for the z value.What is your conclusion?

If you have a population standard deviation of 10 and a sample size of 4, what is your standard error of the mean?

If you have a population standard deviation of 18 and a sample size of 9, what is your standard error of the mean?

If your sample mean is 11, your population average is 17, and your standard error of the mean is 3, what is your observed z value?

The _______ is the standard deviation of all possible means selected from the population.

Calculating the one-sample Z-test serves to give you _______.

If your sample mean is 25, your population average is 5, and your standard error of the mean is 10, what is your observed z value?

What is effect size?

Dr.Meow teaches Engineering Science 101 and is interested in finding out whether her students perform better on math tests compared to all of the engineering students in the university.State this as a null hypothesis.

If you have a sample size of 16 and a population standard deviation of 40, what is your standard error of the mean?

SPSS does not offer a one-sample Z-test.

SPSS does not offer a ______.

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