1. Fuel economy, part 2. Consider again the data in Exercise 33 about the gas mileage and weights of cars.
a) Create a 95% confidence interval for the slope of the regression line.
b) Explain in this context what your confidence interval means.
2. SAT scores, part 2. Consider the high school SAT scores data from Exercise 35.
a) Find a 90% confidence interval for the slope of the true line describing the association between Math and Verbal scores.
b) Explain in this context what your confidence interval means.