Each front tire on a particular type of vehicle is supposed to be filled to a pressure of 26 psi. Suppose the actual air pressure in each tire is a random variable-X for the right tire and Y for the left tire, with joint pdf given below. ((x, y) = K(x2 + y2) 21 s x 5 31, 21 sys 31 0 otherwise (a) Compute the covariance between X and Y. (Round your answer to four decimal places.) Cov(X, Y) = (b) Compute the correlation coefficient p for this X and Y. (Round your answer to four decimal places.) p =