Alumni Contributions Numbers for the amount of an alumnus's contribution (in dollars) and the years the alumnus has been out of school are shown. The regression line equation is y"= 407.446-13.966x. The standard error of the estimate is s =101.09. Find the 99% Interval when x -4 years. Round your answers to two decimal places as needed. Year x 5 10 8 3 12 Contribution 350 150 400 300 450 250 Send data to Excel The 99%% rediction interval is