The table below shows data obtained in a study involving the number of fireworks (in millions) used and the number of related injuries. Construct a scatter plot for the data set. Find the value of the linear correlation coefficientr. Analyze this value to identify the type of relationship these data values have. Find the slope b and the y-intercept a of the regression line.

MATLAB: An Introduction with Applications
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**Problem 2:**

1. **Data Analysis and Scatter Plot Construction**
   - The table below shows data obtained in a study involving the number of fireworks (in millions) used and the number of related injuries. Construct a scatter plot for the data set.

2. **Correlation Coefficient Calculation**
   - Find the value of the linear correlation coefficient \( r \). **Analyze** this value to identify the type of relationship these data values have.

3. **Regression Line Calculation**
   - Find the slope \( b \) and the y-intercept \( a \) of the regression line.

4. **Graph the Regression Line**
   - Graph the regression line.

5. **Prediction Using the Regression Line**
   - Predict the number of related injuries if 240 million fireworks are used.

6. **Hypothesis Testing**
   - Run a hypothesis test to determine if there is a linear relationship between the two variables.

**Data Table:**

| Number of fireworks used (\( X \)) | Number of related injuries (\( Y \)) |
|------------------------------------|-------------------------------------|
| 213.9                              | 8800                                |
| 205.9                              | 8600                                |
| 234.1                              | 9600                                |
| 207.5                              | 8600                                |
| 186.4                              | 11,400                              |
| 225.3                              | 10,500                              |

**Graph Explanation:**
- A scatter plot would be constructed using the above data, with the x-axis representing the number of fireworks used (in millions) and the y-axis representing the number of related injuries.
- Plot the points on the graph, each corresponding to a pair of values from the table.
- Add the regression line once calculated to visualize the linear relationship.
Transcribed Image Text:**Problem 2:** 1. **Data Analysis and Scatter Plot Construction** - The table below shows data obtained in a study involving the number of fireworks (in millions) used and the number of related injuries. Construct a scatter plot for the data set. 2. **Correlation Coefficient Calculation** - Find the value of the linear correlation coefficient \( r \). **Analyze** this value to identify the type of relationship these data values have. 3. **Regression Line Calculation** - Find the slope \( b \) and the y-intercept \( a \) of the regression line. 4. **Graph the Regression Line** - Graph the regression line. 5. **Prediction Using the Regression Line** - Predict the number of related injuries if 240 million fireworks are used. 6. **Hypothesis Testing** - Run a hypothesis test to determine if there is a linear relationship between the two variables. **Data Table:** | Number of fireworks used (\( X \)) | Number of related injuries (\( Y \)) | |------------------------------------|-------------------------------------| | 213.9 | 8800 | | 205.9 | 8600 | | 234.1 | 9600 | | 207.5 | 8600 | | 186.4 | 11,400 | | 225.3 | 10,500 | **Graph Explanation:** - A scatter plot would be constructed using the above data, with the x-axis representing the number of fireworks used (in millions) and the y-axis representing the number of related injuries. - Plot the points on the graph, each corresponding to a pair of values from the table. - Add the regression line once calculated to visualize the linear relationship.
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