Question 1

If a researcher reported for a single-sample t-test that t(10)= 2.50,p< .05,how many participants were there in the study?

Accepted Answer

A) 10 
B) 9 
C) 11 
D) 12 
A) 10 
B) 9 
C) 11 
D) 12 C

Question 2

If a researcher reported for a single-sample t-test that t(17)= 2.90,p< .02,how many participants were there in the study?

Accepted Answer

A) 18 
B) 20 
C) 10 
D) 9 
A) 18 
B) 20 
C) 10 
D) 9 A

Question 3

Imagine that you conducted a single-sample t-test with 8 participants.For a two-tailed test,the tcv at $\alpha$= .05 would be

Accepted Answer

A) $\pm$1.796. 
B) $\pm$2.365. 
C) $\pm$2.179. 
D) $\pm$2.201. 
A) $\pm$1.796. 
B) $\pm$2.365. 
C) $\pm$2.179. 
D) $\pm$2.201. B

Question 4

A researcher in interested in whether high school students who play sports have a higher or lower body mass index (BMI)than students in the general population.The researcher is unsure whether playing sports will decrease body mass (due to more calories burned)or increase body mass (due to more muscle mass).He compares their average BMI to that of students in the general population and finds that zobt = +1.92.This is a _____ test and the researcher should conclude _____.

Accepted Answer

A) one-tailed; that students who are athletes have significantly higher BMIs. 
B) two-tailed; that students who are athletes have significantly higher BMIs. 
C) one-tailed: that students who are athletes do not have significantly higher BMIs. 
D) two-tailed: that students who are athletes do not have significantly higher BMIs. 
A) one-tailed; that students who are athletes have significantly higher BMIs. 
B) two-tailed; that students who are athletes have significantly higher BMIs. 
C) one-tailed: that students who are athletes do not have significantly higher BMIs. 
D) two-tailed: that students who are athletes do not have significantly higher BMIs.

Question 5

The standard deviation of the sampling distribution is called the

Accepted Answer

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

Question 6

When comparing a sample to a population,if you know $\mu$ but not $\sigma$ and have a sample size smaller than 30,you should conduct a _____ test.

Accepted Answer

A) t 
B) z 
C) $\chi$2 
D) phi 
A) t 
B) z 
C) $\chi$2 
D) phi

Question 7

The estimated standard error of the mean is calculated by dividing _____ by _____.

Accepted Answer

A) s; the square root of n 
B) s; n2 
C) n2; s 
D) the square root of n; s 
A) s; the square root of n 
B) s; n2 
C) n2; s 
D) the square root of n; s

Question 8

How does a t test differ from a z test in terms of when it is used,how it is calculated,and how we determine significance?

Accepted Answer

A t test differs from a z test in that@#LAT-DLM& i

Question 9

If a researcher reported for a one-tailed single-sample t-test that t(10)= 1.96,then

Accepted Answer

A) p < .02. 
B) p < .05. 
C) p < .01. 
D) p < .001. 
A) p < .02. 
B) p < .05. 
C) p < .01. 
D) p < .001.

Question 10

What are the assumptions of the z test?

Accepted Answer

@#LAT-DLM& and @#LAT-DLM& should be known; the dat

Question 11

If a researcher reported for a one-tailed single-sample t-test that t(14)= 2.25,then

Accepted Answer

A) p < .025. 
B) p < .05. 
C) p < .01. 
D) p < .001. 
A) p < .025. 
B) p < .05. 
C) p < .01. 
D) p < .001.

Question 12

A parametric inferential statistical test of the null hypothesis for a single sample where the population variance is known is the

Accepted Answer

A) t test. 
B) standard deviation. 
C) z test. 
D) standard error test. 
A) t test. 
B) standard deviation. 
C) z test. 
D) standard error test.

Question 13

If a researcher reported for a two-tailed single-sample t-test that t(10)= 2.25,then

Accepted Answer

A) p < .02. 
B) p < .05. 
C) p < .01. 
D) p < .001. 
A) p < .02. 
B) p < .05. 
C) p < .01. 
D) p < .001.

Question 14

For a single-sample t test with 12 participants,the degrees of freedom are

Accepted Answer

A) 10. 
B) 11. 
C) 12. 
D) unable to be determined. 
A) 10. 
B) 11. 
C) 12. 
D) unable to be determined.

Question 15

For a single-sample t test with 18 participants,the degrees of freedom are

Accepted Answer

A) 17. 
B) 18. 
C) 16. 
D) unable to be determined. 
A) 17. 
B) 18. 
C) 16. 
D) unable to be determined.

Question 16

Which of the following is not an assumption of the t-test?

Accepted Answer

A) The data should be ordinal or nominal. 
B) The population distribution of scores should be symmetrical. 
C) The population mean ($\mu$)is known,but the population standard deviation ($\sigma$)is not known. 
D) The sample size is typically less than 30. 
A) The data should be ordinal or nominal. 
B) The population distribution of scores should be symmetrical. 
C) The population mean ($\mu$)is known,but the population standard deviation ($\sigma$)is not known. 
D) The sample size is typically less than 30.

Question 17

In order to increase the power of z test,one might

Accepted Answer

A) increase sample size. 
B) use a two-tailed test. 
C) decrease sample size. 
D) none of the options is correct 
A) increase sample size. 
B) use a two-tailed test. 
C) decrease sample size. 
D) none of the options is correct

Question 18

What is the standard error of the mean for a distribution of scores where $\sigma$ = 50 and n = 75?

Accepted Answer

A) 5.77 
B) .066 
C) 1.5 
D) unable to determine 
A) 5.77 
B) .066 
C) 1.5 
D) unable to determine

Question 19

Which of the following is not an assumption of the $\chi$2-test?

Accepted Answer

A) It is a nonparametric test. 
B) It is appropriate only for ordinal data. 
C) The frequency in each cell should be at least 5. 
D) The sample should be randomly selected. 
A) It is a nonparametric test. 
B) It is appropriate only for ordinal data. 
C) The frequency in each cell should be at least 5. 
D) The sample should be randomly selected.

Question 20

The formula to determine the _____ is based on the _____.

Accepted Answer

A) central limit theorem; standard deviation 
B) standard deviation; central limit theorem 
C) standard error of the mean; central limit theorem 
D) central limit theorem; z test 
A) central limit theorem; standard deviation 
B) standard deviation; central limit theorem 
C) standard error of the mean; central limit theorem 
D) central limit theorem; z test

If a researcher reported for a single-sample t-test that t(10)= 2.50,p< .05,how many participants were there in the study?

If a researcher reported for a single-sample t-test that t(17)= 2.90,p< .02,how many participants were there in the study?

Imagine that you conducted a single-sample t-test with 8 participants.For a two-tailed test,the t_cv at $\alpha$ = .05 would be

The standard deviation of the sampling distribution is called the

When comparing a sample to a population,if you know $\mu$ but not $\sigma$ and have a sample size smaller than 30,you should conduct a _____ test.

The estimated standard error of the mean is calculated by dividing _ by _.

How does a t test differ from a z test in terms of when it is used,how it is calculated,and how we determine significance?

If a researcher reported for a one-tailed single-sample t-test that t(10)= 1.96,then

What are the assumptions of the z test?

If a researcher reported for a one-tailed single-sample t-test that t(14)= 2.25,then

A parametric inferential statistical test of the null hypothesis for a single sample where the population variance is known is the

If a researcher reported for a two-tailed single-sample t-test that t(10)= 2.25,then

For a single-sample t test with 12 participants,the degrees of freedom are

For a single-sample t test with 18 participants,the degrees of freedom are

Which of the following is not an assumption of the t-test?

In order to increase the power of z test,one might

What is the standard error of the mean for a distribution of scores where $\sigma$ = 50 and n = 75?

Which of the following is not an assumption of the $\chi$ ²-test?

The formula to determine the _ is based on the _.

Thinking Like a Scientist

Getting Started: Ideas, resources, and Ethics

Defining, measuring, and Manipulating Variables

Descriptive Methods

Data Organization and Descriptive Statistics

Correlational Methods and Statistics

Probability and Hypothesis Testing

The Logic of Experimental Design

Inferential Statistics: Two-Group Designs

Experimental Designs With More Than Two Levels of an Independent Variable

Complex Experimental Design

Quasi-Experimental and Single-Case Designs

Apa Communication Guidelines

Filters

Exam 8: Introduction to Inferential Statistics

If a researcher reported for a single-sample t-test that t(10)= 2.50,p< .05,how many participants were there in the study?

If a researcher reported for a single-sample t-test that t(17)= 2.90,p< .02,how many participants were there in the study?

Imagine that you conducted a single-sample t-test with 8 participants.For a two-tailed test,the tcv at α\alphaα = .05 would be

The standard deviation of the sampling distribution is called the

When comparing a sample to a population,if you know μ\muμ but not σ\sigmaσ and have a sample size smaller than 30,you should conduct a _____ test.

The estimated standard error of the mean is calculated by dividing _____ by _____.

How does a t test differ from a z test in terms of when it is used,how it is calculated,and how we determine significance?

If a researcher reported for a one-tailed single-sample t-test that t(10)= 1.96,then

What are the assumptions of the z test?

If a researcher reported for a one-tailed single-sample t-test that t(14)= 2.25,then

A parametric inferential statistical test of the null hypothesis for a single sample where the population variance is known is the

If a researcher reported for a two-tailed single-sample t-test that t(10)= 2.25,then

For a single-sample t test with 12 participants,the degrees of freedom are

For a single-sample t test with 18 participants,the degrees of freedom are

Which of the following is not an assumption of the t-test?

In order to increase the power of z test,one might

What is the standard error of the mean for a distribution of scores where σ\sigmaσ = 50 and n = 75?

Which of the following is not an assumption of the χ\chiχ 2-test?

The formula to determine the _____ is based on the _____.

Thinking Like a Scientist

Getting Started: Ideas, resources, and Ethics

Defining, measuring, and Manipulating Variables

Descriptive Methods

Data Organization and Descriptive Statistics

Correlational Methods and Statistics

Probability and Hypothesis Testing

The Logic of Experimental Design

Inferential Statistics: Two-Group Designs

Experimental Designs With More Than Two Levels of an Independent Variable

Complex Experimental Design

Quasi-Experimental and Single-Case Designs

Apa Communication Guidelines

Filters

Imagine that you conducted a single-sample t-test with 8 participants.For a two-tailed test,the t_cv at $\alpha$ = .05 would be

When comparing a sample to a population,if you know $\mu$ but not $\sigma$ and have a sample size smaller than 30,you should conduct a _____ test.

The estimated standard error of the mean is calculated by dividing _ by _.

What is the standard error of the mean for a distribution of scores where $\sigma$ = 50 and n = 75?

Which of the following is not an assumption of the $\chi$ ²-test?

The formula to determine the _ is based on the _.