6. (5pts) A study was conducted to compare the average time spent in the lab each week versus course grade for computer students. The results are recorded in the table below. Number of hours 10 11 s . ent in the lab Grade (percentage) 96 51 62 58 89 81 46 51 a) Is there a linear correlation between number of hours spent in the lab and grade? If yes, give the value of the linear coefficient and state the strength? If no, why? b) Based on the data above, predict a grade that a student will get if that a student spent 20 hours in the lab each week. c) Is your prediction in part (b) a good prediction? Explain why or why not