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 tabl p(x, y) 0 0.01 0.04 0.01 15 0 0.10 5 0.10 10 0.01 (a) Compute the covariance for X and Y. (Round your answer to two decimal places.) Cov(X,Y)= y 5 0.06 0.13 0.15 10 0.02 0.20 0.17 (b) Compute p for X and Y. (Round your answer to two decimal places.) P

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.1: Measures Of Center
Problem 14PPS
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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
0
0.01
0.04
0.01
5
0.06
0.13
0.15
y
10
0.02
0.20
0.17
15
0.10
0.10
0.01
(a) Compute the covariance for X and Y. (Round your answer to two decimal places.)
Cov(x, y) =
(b) Compute p for X and Y. (Round your answer to two decimal places.)
P =
Transcribed Image Text: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 0 0.01 0.04 0.01 5 0.06 0.13 0.15 y 10 0.02 0.20 0.17 15 0.10 0.10 0.01 (a) Compute the covariance for X and Y. (Round your answer to two decimal places.) Cov(x, y) = (b) Compute p for X and Y. (Round your answer to two decimal places.) P =
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