An instructor has given a short quiz consisting of two parts. For a randomly selected student, letX= the number of points earned on the first part andY= the numberof points earned on the second part. Suppose that the joint pmf ofXandYis given in the accompanying table.

	y
p(x,y)	0	5	10	15
x	0	0.03	0.06	0.02	0.10
5	0.04	0.14	0.20	0.10
10	0.01	0.15	0.14	0.01

(a) Compute the covariance forXandY. (Round your answer to two decimal places.) Cov(X,Y) = (b) ComputeforXandY. (Round your answer to two decimal places.)