Use the accompanying set of dependent and independent variables to complete parts a through d below. Click the icon to view the data set. a) Construct a 95% confidence interval for the dependent variable when x, = 40 and x2 = 15. The 95% confidence interval is from a lower limit of to an upper limit of (Round to two decimal places as needed.) X Set of dependent and independent variables y 46 41 38 38 30 24 21 15 8 X 73 64 77 53 44 46 35 16 14 X2 21 29 20 17 13 16 9 16 11 Print Done OM