An instructor at Arizona State University asked a random sample of eight students to record their study times in a beginning calculus course. She then made a table for the total number of hours studied(x) over a period of 2 weeks and test score(y) at the end of the two weeks. Here are the results. x 10 15 12 20 8 16 14 22y 92 81 84 74 85 80 84 80(i) Find the regression equation for the data points.(ii) Graph the regression equation and the data points. (iii) Describe the apparent relationship between the two variables under consideration.(iv) Interpret the slope of the regression line. (v) Identify the predictor and the response variables. (vi) Predict the score of a student who studies for 15 hours.