A random sample of 10 students from a master's level statistics course was selected. The results indicate that the time in hours dedicated to studying during the semester and the scores obtained in the final exam were the following: Time 41 28 48 44 40 25 42 35 47 37. Scores 79 90 47 51 77 83 65 86 78 63. What is the Pearson correlation coefficient?
1) 0.748
2) 0.776
3) 0.881
4) 0.654