Determine whether the association between the two variables is positive or negative. The number of times a pencil is sharpened and its length The association between the number of times a pencil is sharpened and its length is (Choose one) Y . Eositive I Compute the least-squares regression equation for the given data set. Use a TI-84 calculator. Round the slope and y-intercept to at least four decimal places. X 43 37 15 19 24 37 18 y 72 67 25 29 42 65 32 Send data to Excel Regression line equation: y = X 5Compute the least-squares regression equation for the given data set. Use a TI-84 calculator. Round the slope and y-intercept to at least four decimal places. x' 44 38 16 20 2": 38 19 .1\" 73 68 24 30 43 66 33 F Send data to Excel A 7 Regression line equation: _1' : l l X \\(D