In this question, we investigate the relationship between the top (maximum) speed (mph) and maximum height for a random sample of roller coasters in the United States. Here is the scatterplot and a summary of the simple linear regression model.   Construct a 95% confidence interval for the true slope of the regression line and interpret your confidence interval in context.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question

In this question, we investigate the relationship between the top (maximum) speed (mph) and maximum height for a random sample of roller coasters in the United States. Here is the scatterplot and a summary of the simple linear regression model.

 

Construct a 95% confidence interval for the true slope of the regression line and interpret your confidence interval in context.

### Scatterplot of Speed versus Height for Roller Coasters

#### Description
The scatterplot illustrates the relationship between the maximum height (in feet) and the top speed (in mph) of various roller coasters. The data points show a positive correlation, indicating that as the maximum height of a roller coaster increases, its top speed generally tends to increase as well.

#### Axes
- **X-axis:** Represents the maximum height of the roller coasters (in feet), ranging from 30 to 250 feet.
- **Y-axis:** Represents the top speed of the roller coasters (in mph), ranging from 30 to 90 mph.

#### Statistical Analysis
The text below the scatterplot provides a detailed statistical analysis:

- **Coefficients:**
  - **Intercept:** Estimate = 32.2805, Std. Error = 1.5186, t value = 21.26, p-value < 2e-16 (highly significant)
  - **Max_Height:** Estimate = 0.2016, Std. Error = 0.0112, t value = 18.01, p-value < 2e-16 (highly significant)

- **Significance Codes:**
  - '***' indicates a p-value < 0.001
  - '**' indicates a p-value < 0.01
  - '*' indicates a p-value < 0.05

- **Residual Standard Error:** 6.029 on 109 degrees of freedom
- **Multiple R-squared:** 0.7484 (indicating that approximately 74.84% of the variability in top speed can be explained by maximum height)
- **Adjusted R-squared:** 0.7461
- **F-statistic:** 324.3 on 1 and 109 DF, p-value < 2.2e-16 (highly significant)

This analysis suggests a strong and significant relationship between roller coaster height and speed, with a high degree of variance explained by the model.
Transcribed Image Text:### Scatterplot of Speed versus Height for Roller Coasters #### Description The scatterplot illustrates the relationship between the maximum height (in feet) and the top speed (in mph) of various roller coasters. The data points show a positive correlation, indicating that as the maximum height of a roller coaster increases, its top speed generally tends to increase as well. #### Axes - **X-axis:** Represents the maximum height of the roller coasters (in feet), ranging from 30 to 250 feet. - **Y-axis:** Represents the top speed of the roller coasters (in mph), ranging from 30 to 90 mph. #### Statistical Analysis The text below the scatterplot provides a detailed statistical analysis: - **Coefficients:** - **Intercept:** Estimate = 32.2805, Std. Error = 1.5186, t value = 21.26, p-value < 2e-16 (highly significant) - **Max_Height:** Estimate = 0.2016, Std. Error = 0.0112, t value = 18.01, p-value < 2e-16 (highly significant) - **Significance Codes:** - '***' indicates a p-value < 0.001 - '**' indicates a p-value < 0.01 - '*' indicates a p-value < 0.05 - **Residual Standard Error:** 6.029 on 109 degrees of freedom - **Multiple R-squared:** 0.7484 (indicating that approximately 74.84% of the variability in top speed can be explained by maximum height) - **Adjusted R-squared:** 0.7461 - **F-statistic:** 324.3 on 1 and 109 DF, p-value < 2.2e-16 (highly significant) This analysis suggests a strong and significant relationship between roller coaster height and speed, with a high degree of variance explained by the model.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
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 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…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
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
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman