(18pts) You are interested in the connection between a student's attendance in Math 133 (% of class sessions attended) and their final grade in the course (overall %). You gather a random sample. fed Line " Grade it Course Simple linear regression results: Dependent Variable: Grade Independent Variable: Attendance 50 X y- Grade = 17.958063 + 0.67237096 Attendance 30 Sample size: 21 R (correlation coefficient) = 0.63600844 60 R-sq = 0.40450673 Estimate of error standard deviation: 10.460978 a) Which variable is the explanatory variable? % attendance 106 Allemanbe b) Which variable is the response variable? grade c) How many random students were sampled? 21