A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
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1. Consider two random variables X and Y with joint PMF given in the table
a. Find P(X = 2, Y<2)
b. Find marginal PMF of X and Y
c. Find P(Y=2 |X= 1)
Are X and Y independent
1
2
3
1/6
0.25
0.125
2
0.125
1/6
1/6
2. Let X and Y be jointly continuous random variables with joint PDF
fw(Xy) =
х+ су?
0,
OSXS1,0<ys1
elsewhere
a)
Find the constant c
Find the marginal PDF's fx(x) and fy(y)
Find P(OSXS1/2,0SYS1/2)
b)
c)
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Transcribed Image Text:1. Consider two random variables X and Y with joint PMF given in the table a. Find P(X = 2, Y<2) b. Find marginal PMF of X and Y c. Find P(Y=2 |X= 1) Are X and Y independent 1 2 3 1/6 0.25 0.125 2 0.125 1/6 1/6 2. Let X and Y be jointly continuous random variables with joint PDF fw(Xy) = х+ су? 0, OSXS1,0<ys1 elsewhere a) Find the constant c Find the marginal PDF's fx(x) and fy(y) Find P(OSXS1/2,0SYS1/2) b) c)
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