Suppose that you are interested in the linear relationship between two variables x and y. A random sample of 24 observations is collected and yields the following regression results: R2 = 0.7025 Sbj = 0.3781 Error Sum of Squares=484.2064 And the test statistics for the test to determine whether there is a linear relationship between x and y is t = -4.011 . Answer the following questions: (Please give your answer with the accuracy of four decimal places.) 1. Calculate the sample correlation coefficient between x and y. 2. Calculate the Regression Sum of Squares. 3. Calculate the estimated value of slope for the linear regression line between x and y, where y is the dependant variable