Consider two random variables X and Y with joint PMF given in the following Table x= Number of Bars of Signal Strength 1 2 3 y= Response 1 0.01 0.02 0.25 time(nearest second) 2 0.02 0.03 0.20 3 0.02 0.10 0.05 4 0.15 0.10 0.05 a) Find P(X = 1, Y≤3) b) Find the marginal PMFs of X and Y. c) Find P(Y=1|X=1) d) Are X and Y independent? e) For the discrete random variables X and Y, Find E(Y|X=1) and V(Y|X=1)?

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Consider two random variables X and Y with joint PMF given in the following Table
x= Number of Bars of Signal
Strength
1
2
3
y= Response
1
0.01
0.02
0.25
time(nearest second)
2
0.02
0.03
0.20
3 0.02
0.10
0.05
4
0.15
0.10
0.05
a) Find P(X = 1, Y≤3)
b) Find the marginal PMFs of X and Y.
c) Find P(Y=1|X=1)
d) Are X and Y independent?
e) For the discrete random variables X and Y, Find E(Y|X=1) and V(Y|X=1)?
Transcribed Image Text:Consider two random variables X and Y with joint PMF given in the following Table x= Number of Bars of Signal Strength 1 2 3 y= Response 1 0.01 0.02 0.25 time(nearest second) 2 0.02 0.03 0.20 3 0.02 0.10 0.05 4 0.15 0.10 0.05 a) Find P(X = 1, Y≤3) b) Find the marginal PMFs of X and Y. c) Find P(Y=1|X=1) d) Are X and Y independent? e) For the discrete random variables X and Y, Find E(Y|X=1) and V(Y|X=1)?
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