Question 8 (1 point) In the context of linear association and correlation coefficient, if 2(13 f) (y 7) = 64, n = 35, Sx = 4.8 and S}, = 4.5, evaluate the correlation coefficient r. Note: 1- Round intermediate numbers to 4 decimal places. 2- Round the final answer to 2 decimal places. Enter the final answer with 2 decimal places. Your Answer: Question 9 (1 point) In the context of linear association and correlation coefficient, calculate r when n = 17, and 2 zxzy = -3.9. Note: 1- Only round the final answer. Round and enter the final answer with 1 decimal place. Your Answer: Question 10 (1 point} lfy is the dependent variable and x is the independent variable. And if the sum of the cross product of the deviations is 2(36 7) (y 7) = 75, and also if 26.02 and 33.76 are the variances for the independent and dependent variables, respectively, and we have a sample size of 16, what is the correlation coefficient between x and y? Note: 1- Round intermediate numbers to 4 decimal places. 2- Round your final answer to 2 decimal places. Your