(a) Find the probability PLY>X) (b) Find the marginal distributions of X and Y. (c) Are X and Y independent? If not, find Cov(X, Y).
(a) Find the probability PLY>X) (b) Find the marginal distributions of X and Y. (c) Are X and Y independent? If not, find Cov(X, Y).
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter9: Solving Quadratic Functions
Section: Chapter Questions
Problem 4CA
Related questions
Question
![Let X denote the number of times a photocopy machine will malfunction: 0, 1,
2, or 3 times, on any given month. Let Y denote the number of times a
technician is called on an emergency call. The joint p.m.f p(x, y) is presented in
the table below
I
X
0
1
2
3
0
0.15
0.30
0.05
0
1
0.05
0.15
0.05
0.05
2
0
0.05
0.10
0.05
(a) Find the probability P(Y>X)
(b) Find the marginal distributions of X and Y.
(c) Are X and Y independent? If not, find Cov(X, Y).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff8b46fd2-a892-417a-a19b-24f600259754%2Fe8d976d7-5236-4931-bee3-d5df6a0d72ca%2F50dpldc_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Let X denote the number of times a photocopy machine will malfunction: 0, 1,
2, or 3 times, on any given month. Let Y denote the number of times a
technician is called on an emergency call. The joint p.m.f p(x, y) is presented in
the table below
I
X
0
1
2
3
0
0.15
0.30
0.05
0
1
0.05
0.15
0.05
0.05
2
0
0.05
0.10
0.05
(a) Find the probability P(Y>X)
(b) Find the marginal distributions of X and Y.
(c) Are X and Y independent? If not, find Cov(X, Y).
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