Use this information for questions 14 & 15 Assume that a researcher is interested in the relationship between hours of sleep and anxiety. Eight individuals are randomly selected and the amount of hours slept and anxiety scores are measured. The scores are reported in the following table. Identify the regression line using hours of sleep (x) to predict anxiety scores (y) Time Essay Reading (x) Score (y) X-Xmean (X-Xme y-Ymean (y-Ymean)" (X-Xmean)(y-Ymean) -1.5 2.25 0.5 0.25 -1.5 -0.5 0.25 m|~ 1.0 O 1.5 0.5 0.25 121 5.5 SUM 216 276 MEAN 14. Calculate the correlation coefficient r for this sample. 15. Identify the regression line using hours of sleep (x) to predict anxiety scores (y)