Statistic Lab - If  the confidence interval for a slope coefficient

Statistic Lab Questions

1. If  the confidence interval for a slope coefficient is (-.14, 12.2), is the slope statistically significant?  Why or why not? 
2. Think about a research question that interests you.
    
3. What is your research question?
4. What is an example of a testable hypothesis related to this research question?
5. Suppose that you are going to test some version of this hypothesis using a simple linear regression. What would your predictor be? What would your dependent variable be? 
6. What are some potential confounding variables that might motivate you to use a multiple linear regression equation instead?