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. f(x, y) ; y) = {K (x² + y² K(x² + y2) 22 ≤ x ≤ 31, 22 ≤ y ≤ 31 otherwise (a) Compute the covariance between X and Y. (Round your answer to four decimal places.) Cov(X, Y)= | Enter a number. (b) Compute the correlation coefficient p for this X and Y. (Round your answer to four decimal places.) P =