7. The following are the number of hours which 12 students spent in studying for a Midterm examination and the grades in obtained in English. Calculate the correlation coefficient and describe the relationship. Use 0.05 level of significance to test whether the established relationship is significant or not. Number of Hours Studied Midterm Grades 5 50 6 60 11 79 20 90 19 85 20 92 10 80 12 82 8 65 15 85 18 94 8. The following are the IQ of persons and the number of hours spent in front of TV per week. Use 0.05 level of significance to test whether the established relationship is significant or not. No. of hours in front of TV per IQ week 106 7 86 0 100 27 101 50 99 28 103 29 97 20 113 12 112 6 110 17