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. (x²+ y2) 21 ≤ x ≤ 32, 21 ≤ y ≤ 32 f(x, y) = x) = {K(x² + y²) 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 =