A researcher is trying to determine if cell phone usage affects health. The plot below shows the relationship between the number of minutes a day a subject spends on the phone and the number of days in a year the subject was sick. The linear regression output is shown below. 80 E 0 g E 6 ' ' ' ' M D. % ' n . . ' Multiple R 0.16031 :3 4 . 0 ' '. R Square 0.025699 1.: . u . ' Adjusted R Square -0.0091 g 20 . . Standard Error 21.09461 5: Observations 30 0 _-_A.A-- 20 30 40 50 60 70 Daily cell phone usage (in minutes) R = |Ex: 0.654321 6 What is the correlation between daily cell phone usage and number of sick days? i Pick :dorrelation