Question 1

Calculate the degrees of freedom for a single-sample t test with 18 subjects.

Accepted Answer

A)  17 
B)  18 
C)  16 
D)  Cannot be determined 
A)  17 
B)  18 
C)  16 
D)  Cannot be determined A

Question 2

Assume that the average person in America weighs 150 pounds ($\mu$ ). You want to determine whether college students weigh less than the average American. Following are the weights collected on a sample of college students: 120, 105, 166, 170, 145, 149, 135, 115, 168, 138. 
-What is tcv?

Accepted Answer

T_cv = 1.833

Question 3

Rich performed a two-tailed test for an experiment in which N = 20. He could not find his t critical values table, but he remembered that the tcv at df = 15. He decided to compare his tobt to this tcv. Is he more likely to make a Type I or a Type II error in this situation?

Accepted Answer

Rich is more likely to make a Type II error in this case. He will use a t_cvthat is larger than the one he should be using and thus might miss a significant result.

Question 4

Assume that the average person in America weighs 150 pounds ($\mu$ ). You want to determine whether college students weigh less than the average American. Following are the weights collected on a sample of college students: 120, 105, 166, 170, 145, 149, 135, 115, 168, 138. 
-Compute tobt.

Accepted Answer

The answer of Assume that the average person in America...

Question 5

Assume that the average person in America weighs 150 pounds ($\mu$ ). You want to determine whether college students weigh less than the average American. Following are the weights collected on a sample of college students: 120, 105, 166, 170, 145, 149, 135, 115, 168, 138. 
-What are H0 and Ha for this study?

Accepted Answer

Question 6

Assume that the average person in America weighs 150 pounds ($\mu$ ). You want to determine whether college students weigh less than the average American. Following are the weights collected on a sample of college students: 120, 105, 166, 170, 145, 149, 135, 115, 168, 138. 
-Calculate the 95% confidence interval.

Accepted Answer

The 95% CI

Question 7

Assume that the average person in America weighs 150 pounds ($\mu$ ). You want to determine whether college students weigh less than the average American. Following are the weights collected on a sample of college students: 120, 105, 166, 170, 145, 149, 135, 115, 168, 138. 
-Should Ho be rejected? What should the researcher conclude?

Accepted Answer

H₀ should not be rejected. Coll

Question 8

Which of the following refers to the set of distributions that, although symmetrical and bell-shaped, are not normally distributed?

Accepted Answer

A)  Student's t distribution 
B)  Gosset's t distribution 
C)  The z distribution 
D)  None of the above 
A)  Student's t distribution 
B)  Gosset's t distribution 
C)  The z distribution 
D)  None of the above

Question 9

Aura performed a two-tailed test for an experiment in which N = 15. She could not find her t critical values table, but she remembered that the tcv at df = 20. She decided to compare her tobt to this tcv. Is she more likely to make a Type I or a Type II error in this situation?

Accepted Answer

Aura is more likely to make a Type I err

Question 10

Assume that the average person in America weighs 150 pounds ($\mu$ ). You want to determine whether college students weigh less than the average American. Following are the weights collected on a sample of college students: 120, 105, 166, 170, 145, 149, 135, 115, 168, 138. 
-Is this a one- or two-tailed test?

Accepted Answer

This is a

Question 11

Calculate the degrees of freedom for a single-sample t test with 10 subjects.

Accepted Answer

A)  10 
B)  9 
C)  8 
D)  Cannot be determined 
A)  10 
B)  9 
C)  8 
D)  Cannot be determined

Question 12

In a study with 25 subjects and s = 15, the estimated standard error of the mean would be:

Accepted Answer

A)  0.6. 
B)  3.0. 
C)  2.0. 
D)  2.6. 
A)  0.6. 
B)  3.0. 
C)  2.0. 
D)  2.6.

Question 13

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

Accepted Answer

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

Question 14

In a study with 16 subjects and s = 10, the estimated standard error of the mean would be:

Accepted Answer

A)  1.0. 
B)  1.5. 
C)  2.0. 
D)  2.5. 
A)  1.0. 
B)  1.5. 
C)  2.0. 
D)  2.5.

Question 15

Calculate the degrees of freedom for a single-sample t test with 12 subjects.

Accepted Answer

A)  10 
B)  11 
C)  12 
D)  Cannot be determined 
A)  10 
B)  11 
C)  12 
D)  Cannot be determined

Calculate the degrees of freedom for a single-sample t test with 18 subjects.

Assume that the average person in America weighs 150 pounds ( $\mu$ ). You want to determine whether college students weigh less than the average American. Following are the weights collected on a sample of college students: 120, 105, 166, 170, 145, 149, 135, 115, 168, 138. -What is tcv?

Rich performed a two-tailed test for an experiment in which N = 20. He could not find his t critical values table, but he remembered that the t_cv at df = 15. He decided to compare his t_obt to this t_cv. Is he more likely to make a Type I or a Type II error in this situation?

Assume that the average person in America weighs 150 pounds ( $\mu$ ). You want to determine whether college students weigh less than the average American. Following are the weights collected on a sample of college students: 120, 105, 166, 170, 145, 149, 135, 115, 168, 138. -Compute tobt.

Which of the following refers to the set of distributions that, although symmetrical and bell-shaped, are not normally distributed?

Aura performed a two-tailed test for an experiment in which N = 15. She could not find her t critical values table, but she remembered that the t_cv at df = 20. She decided to compare her t_obt to this t_cv. Is she more likely to make a Type I or a Type II error in this situation?

Calculate the degrees of freedom for a single-sample t test with 10 subjects.

In a study with 25 subjects and s = 15, the estimated standard error of the mean would be:

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

In a study with 16 subjects and s = 10, the estimated standard error of the mean would be:

Calculate the degrees of freedom for a single-sample t test with 12 subjects.

Science and Statistics

Organizing Data, Variables and Measurement

Measures of Central Tendency

Measures of Variation

Standard Scores Z Scores

Probability, Hypothesis Testing and Inferential Statistics

The Single-Sample Z Test

The T Test for Independent Groups Samples

T Test for Correlated Groups Samples

Comparing More Than Two Groups

One-Way Between-Subjects Analysis of Variance Anova

One-Way Repeated Measures Anova

Using Designs With More Than One Independent Variable and Two-Way Between-Subjects Anova

Correlational Research and Correlation Coefficients

Advanced Correlational Techniques: Regression Analysis

Chi-Square Tests

Tests for Ordinal Data

Filters

Exam 8: The Single-Sample T Test

Calculate the degrees of freedom for a single-sample t test with 18 subjects.

Assume that the average person in America weighs 150 pounds ( μ\muμ ). You want to determine whether college students weigh less than the average American. Following are the weights collected on a sample of college students: 120, 105, 166, 170, 145, 149, 135, 115, 168, 138. -What is tcv?

Rich performed a two-tailed test for an experiment in which N = 20. He could not find his t critical values table, but he remembered that the tcv at df = 15. He decided to compare his tobt to this tcv. Is he more likely to make a Type I or a Type II error in this situation?

Assume that the average person in America weighs 150 pounds ( μ\muμ ). You want to determine whether college students weigh less than the average American. Following are the weights collected on a sample of college students: 120, 105, 166, 170, 145, 149, 135, 115, 168, 138. -Compute tobt.

Which of the following refers to the set of distributions that, although symmetrical and bell-shaped, are not normally distributed?

Aura performed a two-tailed test for an experiment in which N = 15. She could not find her t critical values table, but she remembered that the tcv at df = 20. She decided to compare her tobt to this tcv. Is she more likely to make a Type I or a Type II error in this situation?

Calculate the degrees of freedom for a single-sample t test with 10 subjects.

In a study with 25 subjects and s = 15, the estimated standard error of the mean would be:

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

In a study with 16 subjects and s = 10, the estimated standard error of the mean would be:

Calculate the degrees of freedom for a single-sample t test with 12 subjects.

Science and Statistics

Organizing Data, Variables and Measurement

Measures of Central Tendency

Measures of Variation

Standard Scores Z Scores

Probability, Hypothesis Testing and Inferential Statistics

The Single-Sample Z Test

The T Test for Independent Groups Samples

T Test for Correlated Groups Samples

Comparing More Than Two Groups

One-Way Between-Subjects Analysis of Variance Anova

One-Way Repeated Measures Anova

Using Designs With More Than One Independent Variable and Two-Way Between-Subjects Anova

Correlational Research and Correlation Coefficients

Advanced Correlational Techniques: Regression Analysis

Chi-Square Tests

Tests for Ordinal Data

Filters

Assume that the average person in America weighs 150 pounds ( $\mu$ ). You want to determine whether college students weigh less than the average American. Following are the weights collected on a sample of college students: 120, 105, 166, 170, 145, 149, 135, 115, 168, 138. -What is tcv?

Rich performed a two-tailed test for an experiment in which N = 20. He could not find his t critical values table, but he remembered that the t_cv at df = 15. He decided to compare his t_obt to this t_cv. Is he more likely to make a Type I or a Type II error in this situation?

Assume that the average person in America weighs 150 pounds ( $\mu$ ). You want to determine whether college students weigh less than the average American. Following are the weights collected on a sample of college students: 120, 105, 166, 170, 145, 149, 135, 115, 168, 138. -Compute tobt.

Aura performed a two-tailed test for an experiment in which N = 15. She could not find her t critical values table, but she remembered that the t_cv at df = 20. She decided to compare her t_obt to this t_cv. Is she more likely to make a Type I or a Type II error in this situation?