The director of Public Safety of a locality wants to use the scientific method to relate the bars and dance centers with the number of automobile accidents in a city of the country. It has extracted the following numbers from the databases:

Car accidents (Y)	5	4	7	9	8	9	6
Dance clubs (X)	12	10	15	30	25	34	20

Answer the following:

1. Make a scatter plot.

2. Fit and interpret a simple linear regression model to the data.

3. Test the significance of the slope 1.

4. Calculate and interpret the coefficient of determination (R2).

5. Construct a 90% confidence interval for 1.

6. Predict the number of car accidents when you have 11, 13, and 18 bars and dance clubs.