If the range of X is the set (0,1,2.3,4.5,6.7.8] and PIX = x) is defined in the following table: X 0 1 2 3 4 5 6 7 8 P(X=x) 0.0325 0.3481 0.1430 0.0870 0.0146 0.0870 0.0710 0.0428 0.1740 determine the mean and variance of the random variable. Round your answers to two decimal places.