Evaluate the following formula for x, = 97.68, X2 = 97.49, Hy - H2 =0, 6, = 0.79, 62 = 0.69, n, = 17, and n2 = 59. ( *4 - X2 ) - (My - H2) Z= N NN n2 Z= (Round to two decimal places as needed.)