1. suppose that you have created a contingency table comparing the restaurants that students ate at and whether they got food poisoning. You calculate a chi square value and use it to determine a level a significance for contingency table. In your are own words, state the null hypothesis that this test would be examining

2. explain how smoking cigarettes confounds the relationship between alcohol consumption and lung cancer

3. suppose you are performing a linear regression analysis in which you are testing whether blood pressure predicts heart rate. You derive the following equation from the analysis. Y= 1.5X+40

Explain how you would interpret the slope and the intercept from this equation