2. Which of the following pairs of variables is likely to be negatively correlated? a. Hours spent studying and exam score b. Days absent from class and final course grade c. Servings of caffeine and hours spent awake d. Hours per week spent at the gym and cardiovascular fitness 3. Cellie computes the correlation coefficient for the relation between inches of daily precipitation (rain and snow) in Chicago during December and number of daily an-time flights out of O'Hare International Airport (in Chicago) during December. Which of the following is the most Iikely value of this correlation coefficient? a. -3.43 b. -.64