X and Y are two discrete random variables that are jointly distributed according to the following joint p.m.f. 5 10 X 20 50 0.2 0.2 0.2 10 0.1 0 0.3 Find the correlation coefficient of X and Y. O a. -0.3 O b. -0.15 O c. 0 O d. 0.15 O e. 0.3

A First Course in Probability (10th Edition)
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Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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X and Y are two discrete random variables that are jointly distributed according to the following joint p.m.f.
5
10
X
20 50
0.2 0.2 0.2
10 0.1 0 0.3
Find the correlation coefficient of X and Y.
O a. -0.3
O b. -0.15
O c. 0
O d. 0.15
O e. 0.3
Transcribed Image Text:X and Y are two discrete random variables that are jointly distributed according to the following joint p.m.f. 5 10 X 20 50 0.2 0.2 0.2 10 0.1 0 0.3 Find the correlation coefficient of X and Y. O a. -0.3 O b. -0.15 O c. 0 O d. 0.15 O e. 0.3
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