You are studying how a penguin's flipper length (in mm) explains its body mass (in grams) using linear regression. You choose a non-directional alternative to be safe. Given the information below, choose the formula for the least squares regression line. b1 = 50.15 bo = -5872.09 = 4207.00 x = 201.00 body mass = 50.15 * flipper length - 5872.09 flipper length = 50.15 * body mass - 5872.09 body mass = -5872.09 * flipper length 50.15 4207.00 = 50.15 * 201.00 - 5872.09 body mass = 50.15 * 201.00 - 5872.09 4207.00 = 50.15 * flipper length - 5872.09