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An instructor has given a short quiz consisting of two parts. For a randomly selected student, let X = the number of points earned on the first part and Y = the number of points earned on the second part. Suppose that the joint pmf of X and Y is given in the accompanying table. p(x, y ) 0 5 10 15 0 0.03 0.06 0.02 0.10 X 5 0.04 0.13 0.20 0.10 10 0.01 0.15 0.15 0.01 (a) If the score recorded in the grade book is the total number of points earned on the two parts, what is the expected recorded score E(X + Y)? (Enter your answer to one decimal place.) 13.8 X (b) If the maximum of the two scores is recorded, what is the expected recorded score? (Enter your answer to two decimal places.) 9.4 X Need Help? Read It Watch It Master It 2. [-/2 Points] DETAILS DEVORESTAT9 5.E.030. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER An instructor has given a short quiz consisting of two parts. For a randomly selected student, let X = the number of points earned on the first part and Y = the number of points earned on the second part. Suppose that the joint pmf of X and Y is given in the accompanying table. y P( X, y) 5 10 15 O 0.03 0.06 0.02 0.10 X 5 0.04 0.16 0.20 0.10 10 0.01 0.15 0.12 0.01 (a) Compute the covariance for X and Y. (Round your answer to two decimal places.) Cov(X, n = (b) Compute p for X and Y. (Round your answer to two decimal places.) P =