Suppose that you are interested in the regression analysis between two variables x and y, where y is the dependent variable. The following statistics are obtained: of The sample size is 180; The sample correlation coefficient between x and y is -0.77; [(, - 7;)2 = 900 Please answer the following questions: (Please give your answer with the accuracy of four decimal places.) 1. Compute the coefficient of determination. 2. Calculate the Error Sum of Squares. 3. Calculate the test statistics for the test to determine whether there is a linear relationship between x and y