Question 1

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

Accepted Answer

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

Question 2

In the formula for calculating standard error of the mean,what does n signify?

Accepted Answer

A) the population average 
B) the sample size 
C) the population size 
D) the sample average

Question 3

A value of 0.2 for the z value after conducting a one-sample Z test leads to which conclusion?

Accepted Answer

A) Reject the null hypothesis. 
B) Accept the null hypothesis. 
C) The result is too close to call. 
D) None of these.

Question 4

You have a sample mean of 11,a population average of 17,and a standard error of the mean of 3.Calculate the observed z value.

Accepted Answer

A) 14.0 
B) 8.0 
C) -2.0 
D) 2.2

Question 5

For the t-test,the population's standard deviation is ______.

Accepted Answer

A) not known 
B) known 
C) not relevant 
D) not sure

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

In the statement z = 3.14,p < 0.05,which of the following interpretations is TRUE?

Accepted Answer

A) There is a significant difference between the sample value and the population. 
B) There is a marginally significant difference between the sample value and the population. 
C) There is not a significant difference between the sample value and the population. 
D) The answer cannot be determined from the information given.

Question 8

After the z value is calculated,locate the ______ from a table of z scores.

Accepted Answer

A) obtained value 
B) test value 
C) calculated value 
D) critical value

Question 9

In z = 2.56,p < 0.05,what is the obtained value?

Accepted Answer

A) 0.05 
B) <0.05 
C) 2.56 
D) 2.56 ÷ 0.05

Question 10

In the formula for calculating a z score,what does μsignify?

Accepted Answer

A) the obtained value 
B) the critical value 
C) the population average 
D) the sample average

Question 11

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

Accepted Answer

A) True 
 B)False

Question 12

In the effect size formula,what does σ signify?

Accepted Answer

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

Question 13

What is an example in which a one-sample Z test would be appropriate?

Accepted Answer

The answer of What is an example in which a...

Question 14

In interpreting effect size,what is the meaning of effect size at 0.8?

Accepted Answer

A) small effect size 
B) medium effect size 
C) large effect size 
D) weak effect size

Question 15

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

The answer of Dr.Meow teaches Engineering Science 101 and is...

Question 16

What are the guidelines in using effect size?

Accepted Answer

The answer of What are the guidelines in using effect...

Question 17

The results of both one-sample Z- and t-test are basically the same when the sample size is greater than 30.

Accepted Answer

A) True 
 B)False

Question 18

In the formula for calculating a z score,what does σsignify?

Accepted Answer

A) standard error of the mean 
B) the z value 
C) the sample standard deviation 
D) the population standard deviation

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

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

In the formula for calculating standard error of the mean,what does n signify?

A value of 0.2 for the z value after conducting a one-sample Z test leads to which conclusion?

You have a sample mean of 11,a population average of 17,and a standard error of the mean of 3.Calculate the observed z value.

For the t-test,the population's standard deviation is ______.

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

In the statement z = 3.14,p < 0.05,which of the following interpretations is TRUE?

After the z value is calculated,locate the ______ from a table of z scores.

In z = 2.56,p < 0.05,what is the obtained value?

In the formula for calculating a z score,what does μsignify?

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

In the effect size formula,what does σ signify?

What is an example in which a one-sample Z test would be appropriate?

In interpreting effect size,what is the meaning of effect size at 0.8?

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.

What are the guidelines in using effect size?

The results of both one-sample Z- and t-test are basically the same when the sample size is greater than 30.

In the formula for calculating a z score,what does σsignify?