1. Given the data in the table below do the following:
   1. Calculate r. (5 points)
   2. In testing the significance of r what are the null and alternative hypotheses? (2 points)
   3. Calculate the test statistic for r. (3 points)
   4. Find the critical value, given = 0.05. (2 points)
   5. What is your dependent variable? (1 point)
   6. What is the independent variable? (1 point)
   7. Find the equation of the regression line. (5 points)
   8. Interpret the slope in terms of the variables in this problem. (1 point)
   9. Interpret the y-intercept in terms of the variables in this problem. (1 point)
   10. Find the best predicted level of cotinine for a person who smokes 40 cigarettes per day: (2 points)

Cigarettes per day	40	10	4	13	10	1	18	8	7	10	10	15
Cotinine	179	283	55.6	174	209	9.51	350	1.85	43.4	25.1	408	344