Question 15 7 pt Let the X-values represent the times, in minutes, of preparation for a Statistics test, let the Y-values represent the points earned on the test. Assume that the sample of paired (X, Y) data is a simple random sample of quantitative data and the data have a bivariate normal distribution. Also, the scatterplot shows that the points approximate a straight-line pattern. Assume that the times of preparation have a mean of 222 minutes, and the points earned have a mean of 77 points. If r = 0.666, S, = 33, and Sy = 11, find the regression equation. A. y = 0.222x + 27.716 B. y - 1.998x - 366.556 C. y = 0.666x - 70.852 D. y = 0.666x + 70.852