A reseаrcher cоllected dаtа оn the number оf hours slept (X) and productivity scores (Y) for 30 employees. The following statistics were found: The mean number of hours slept was 7.5, with a sample standard deviation of 1.3. The mean productivity score was 76, with a standard deviation of 11. The correlation coefficient, r, was 0.71. Using only this information, find the least squares regression line predicting productivity score from number of hours slept. Using the regression line you found, predict the productivity score for an employee who sleeps 8.2 hours (assume that 8.2 is within the range of X values in the dataset).