The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they slept the night before the exam. Calculate the equation of the least squares line. Hint: x=7 and y =70. Round the estimates and slope and y-intercept to 2 decimal places. n = 10 Ex =70 Ey =700 Ex 2=504.4 Zy 2 = 53410 Exy = 5126.8 O y = 15.75x-40.25 O y = 15.75x+40.25 O y = 40.25x-15.75 O y=-40.25x+15.75 Previous Next3 points For a linear regression problem, the least squares line is y = 2x+2. Determine the predicted value of y when x = 5 O 12 5 O 19 C not enough information3 points Which of the following statements regarding standard deviation is FALSE? O Standard deviation is a measure of dispersion The empirical rule, which relates the standard deviation and the mean, can be only be used for approximately bell-shaped data sets. Standard deviation is an approximation of the average distance data points lie away from the mean O Standard deviation is the variance squared