Question 1

In a t-test,if the resultant t value is 2.72 and p < 0.05,what is the interpretation?

Accepted Answer

A)  There is a statistical significance in the test.
B)  There is no statistical significance in the test.
C)  unknown
D)  The sample is unaffected

Question 2

In interpreting effect size,what is the meaning of effect size at 0.4?

Accepted Answer

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

Question 3

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

Accepted Answer

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

Question 4

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)  -3.0
B)  2.0
C)  1.0
D)  0

Question 5

What is the meaning of an effect size at 0.2?

Accepted Answer

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

Question 6

In the effect size formula,what does d signify?

Accepted Answer

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

Question 7

In a t-test,if the resultant t value is -2.72 and p < 0.05,what is the interpretation?

Accepted Answer

A)  There is a statistical significance in the test.
B)  There is no statistical significance in the test.
C)  unknown
D)  The sample is unaffected. A

Question 8

Sample size is taken into account when computing effect size.

Accepted Answer

A) True 
 B)False

Question 9

The level of risk associated with the null hypothesis is generally set at ______.

Accepted Answer

A)  0.05
B)  0.10
C)  0.001
D)  0.20 A

Question 10

If the obtained value is NOT higher than the critical value,we ______.

Accepted Answer

A)  reject the null hypothesis
B)  accept the null hypothesis
C)  accept all hypotheses
D)  reject all hypotheses

Question 11

The sample mean is 12,the population average is 19,and the standard error of the mean is 4.What is the observed z value?

Accepted Answer

A)  -1.75
B)  -0.75
C)  1.75
D)  3.5,

Question 12

If the obtained value is higher than the critical value,what is the conclusion?

Accepted Answer

A)  Reject the research hypothesis.
B)  Accept the null hypothesis.
C)  Reject the null hypothesis.
D)  Cannot be determined.

Question 13

After conducting a one-sample Z-test,you arrived at a value of -12.5 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)  You have miscalculated.

Question 14

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

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

If you have a population standard deviation of 20 and a sample size of 4,what is your standard error of the mean?

Accepted Answer

A)  -10
B)  10
C)  5
D)  -5

Question 17

SPSS does NOT offer which of the following?

Accepted Answer

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

Question 18

If the sample mean is 100,the population average is 90,and the standard error of the mean is 10,what is the observed z value?

Accepted Answer

A)  0
B)  -0.10
C)  1.0
D)  -1.0

Question 19

The denominator in the equation for the z value is equal to ______.

Accepted Answer

A)  the population average subtracted from the mean of the sample
B)  the mean of the sample subtracted from the population average
C)  the standard error of the mean minus the population average
D)  the standard error of the mean

Question 20

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

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

In a t-test,if the resultant t value is 2.72 and p < 0.05,what is the interpretation?

Correct AnswerverifiedShow Answer

In interpreting effect size,what is the meaning of effect size at 0.4?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedC

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

Correct AnswerverifiedShow Answer

What is the meaning of an effect size at 0.2?

Correct AnswerverifiedShow Answer

In the effect size formula,what does d signify?

Correct AnswerverifiedShow Answer

In a t-test,if the resultant t value is -2.72 and p < 0.05,what is the interpretation?

Correct AnswerverifiedA

Sample size is taken into account when computing effect size.

Correct AnswerverifiedShow Answer

The level of risk associated with the null hypothesis is generally set at ______.

Correct AnswerverifiedA

If the obtained value is NOT higher than the critical value,we ______.

Correct AnswerverifiedShow Answer

The sample mean is 12,the population average is 19,and the standard error of the mean is 4.What is the observed z value?

Correct AnswerverifiedShow Answer

If the obtained value is higher than the critical value,what is the conclusion?

Correct AnswerverifiedShow Answer

After conducting a one-sample Z-test,you arrived at a value of -12.5 for the z value.What is your conclusion?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

If you have a population standard deviation of 20 and a sample size of 4,what is your standard error of the mean?

Correct AnswerverifiedShow Answer

SPSS does NOT offer which of the following?

Correct AnswerverifiedShow Answer

If the sample mean is 100,the population average is 90,and the standard error of the mean is 10,what is the observed z value?

Correct AnswerverifiedShow Answer

The denominator in the equation for the z value is equal to ______.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified