Kenny is investigating how long his phone's battery lasts (in hours) for various brightness levels (on a scale of 0-100). His data is displayed in the table and graph below. Brightness Level (x) 17 22 29 36 42 59 75 79 84 97 Hours (y) 8.8 5.2 1.9 4.9 6 4.7 1.3 0.1 0.1 0. 1 12 H 10 Hours 10 20 30 40 50 70 80 90 100 Brightness Level What is the residual for the point (17,8.8)? Recall that to calculate a residual, you first need to find the regression line, calculate the predicted value for 17, and finally compute the residual = observed y-value - predicted y-vaue. Complete this question even if the correlation is not significant. hours Question Help: VideoQuestion 7 0/5 pts 9 3 = 19 0 Details y x - x ( - X)2 y - y (y - 3) 2 (z - 3) (y-3) 0 -0.67 0.45 -1.67 2.79 1.12 A A 2.33 5.43 2.33 5.43 5.43 O -1.67 2.79 -0.67 0.45 1.12 = 1.67 y = 1.67 = 8.67 Syy = 8.67 Szy = 7.67 y = (0.88)x + (0.2), r2 = 0.7826 Use the results above to compute the linear correlation coefficient: (Round the answer to 4 decimal places) Question Help: Video & Written Example Submit Question Question 8 10/10 pts O 2 = 19 @ Details