Three sports teams took a random sample of GPAS for the last year. Use alpha = 0.1 to determine if the means are all equal. Track 3.6 Basketball Soccer 3.5 4 2.9 3.9 2.0 2.5 3.1 3.2 3.3 3.4 3.2
Three sports teams took a random sample of GPAS for the last year. Use alpha = 0.1 to determine if the means are all equal. Track 3.6 Basketball Soccer 3.5 4 2.9 3.9 2.0 2.5 3.1 3.2 3.3 3.4 3.2
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Topic Video
Question
Ho:
H1:
Cv:
Tv:
What is the Decision?
![### One-Way ANOVA Test
**Scenario:**
Three sports teams took a random sample of GPAs for the last year. Use alpha (α) = 0.1 to determine if the means are all equal.
#### Data:
| Track | Basketball | Soccer |
|-------|-------------|-------|
| 3.6 | 3.5 | 4.0 |
| 2.9 | 3.9 | 2.0 |
| 2.5 | 3.1 | 3.2 |
| 3.3 | 3.4 | 3.2 |
### Explanation of the Data:
The table above provides the GPAs for students from Track, Basketball, and Soccer teams. Each column represents the GPAs for a team, and each row corresponds to an individual student's GPA from that team.
#### Procedure:
1. **State the Hypotheses:**
- Null Hypothesis (H0): The means of the GPAs for all three sports teams are equal.
- Alternative Hypothesis (H1): At least one of the means is different.
2. **Level of Significance:**
- Use alpha (α) = 0.1
3. **Calculate the ANOVA:**
- Compute the grand mean of all observations.
- Calculate the Between-Group Variability (SSB).
- Calculate the Within-Group Variability (SSW).
- Compute the F-statistic using the formula:
\[
F = \frac{\text{MSB}}{\text{MSW}}
\]
where,
- MSB = SSB / (k - 1)
- MSW = SSW / (N - k)
Here, \(k\) is the number of groups, and \(N\) is the total number of observations.
4. **Decision Rule:**
- Compare the calculated F-statistic with the critical value from F-distribution tables for (df1, df2) degrees of freedom, where \(df1 = k-1\) and \(df2 = N - k\).
5. **Conclusion:**
- If F-calculated > F-critical, reject the null hypothesis. Otherwise, do not reject the null hypothesis.
### Interpretation:
This ANOVA test will help you understand if there is a significant difference](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F41fb376d-216c-4c49-935b-f66a6cc42c2e%2F6863f160-38ca-40f3-82f9-7d46cd0b7b5a%2F02c8yz.jpeg&w=3840&q=75)
Transcribed Image Text:### One-Way ANOVA Test
**Scenario:**
Three sports teams took a random sample of GPAs for the last year. Use alpha (α) = 0.1 to determine if the means are all equal.
#### Data:
| Track | Basketball | Soccer |
|-------|-------------|-------|
| 3.6 | 3.5 | 4.0 |
| 2.9 | 3.9 | 2.0 |
| 2.5 | 3.1 | 3.2 |
| 3.3 | 3.4 | 3.2 |
### Explanation of the Data:
The table above provides the GPAs for students from Track, Basketball, and Soccer teams. Each column represents the GPAs for a team, and each row corresponds to an individual student's GPA from that team.
#### Procedure:
1. **State the Hypotheses:**
- Null Hypothesis (H0): The means of the GPAs for all three sports teams are equal.
- Alternative Hypothesis (H1): At least one of the means is different.
2. **Level of Significance:**
- Use alpha (α) = 0.1
3. **Calculate the ANOVA:**
- Compute the grand mean of all observations.
- Calculate the Between-Group Variability (SSB).
- Calculate the Within-Group Variability (SSW).
- Compute the F-statistic using the formula:
\[
F = \frac{\text{MSB}}{\text{MSW}}
\]
where,
- MSB = SSB / (k - 1)
- MSW = SSW / (N - k)
Here, \(k\) is the number of groups, and \(N\) is the total number of observations.
4. **Decision Rule:**
- Compare the calculated F-statistic with the critical value from F-distribution tables for (df1, df2) degrees of freedom, where \(df1 = k-1\) and \(df2 = N - k\).
5. **Conclusion:**
- If F-calculated > F-critical, reject the null hypothesis. Otherwise, do not reject the null hypothesis.
### Interpretation:
This ANOVA test will help you understand if there is a significant difference
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 3 images

Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Recommended textbooks for you

MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc

Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning

MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc

Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning

Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON

The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman

Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman