1) A study was conducted to compare the average time spent in the lab each week versus course grade for computer programming students. The results are recorded in the table below. # of hours spent in lab 10 11 16 9 7 15 16 10 Grade (percent) 96 51 62 58 89 81 46 51 a) Does the scatter plot appear to follow a linear model? b) Calculate the correlation coefficient. r = _______ c) Is there a significant linear correlation? Explain. d) If there is a significant linear correlation, find the regression equation. e) Find the best predicted grade for a student who spends 8 hours in the lab.