The data below are final exam scores of 10 randomly chosen statistics students and the number of hours they studied for the exam. Determine the equation of the regression line for the given data. Predict the final exam score when a student studied for 4 hours. Predict the final exam score when a student studied for 6 hours.
Data:
Hours, x 3 5 2 8 2 4 4 5 6 3
Scores, y 65 80 60 88 66 78 85 90 90 71