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.yp(x,y)

051015x00.010.060.020.1050.040.130.200.10100.010.150.170.01

(a) Compute the covariance forXandY. (Round your answer to two decimal places.)

Cov(X,Y) =

(b) ComputeforXandY. (Round your answer to two decimal places.)