Let X and Y denote the lengths of life, in hours, of two viruses. Suppose that X and Y are random variables with the joint density function: f(х, у) %3D ezez ifx> 0 and y > 0; otherwise. Then a. k =! b. k = c. k= 1 d. k = 2 Question 4: Given the joint density function: (6 — х — у if 0 < x < 2 and 2 < y < 4; f(x,y) = 8 otherwise. The marginal distribution h(y) is: (6-y a. h(y) = if 2 < y< 4; 8 otherwise. (S=Y if 2
Let X and Y denote the lengths of life, in hours, of two viruses. Suppose that X and Y are random variables with the joint density function: f(х, у) %3D ezez ifx> 0 and y > 0; otherwise. Then a. k =! b. k = c. k= 1 d. k = 2 Question 4: Given the joint density function: (6 — х — у if 0 < x < 2 and 2 < y < 4; f(x,y) = 8 otherwise. The marginal distribution h(y) is: (6-y a. h(y) = if 2 < y< 4; 8 otherwise. (S=Y if 2
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
Related questions
Question
![Question 3:
Let X and Y denote the lengths of life, in hours, of two viruses. Suppose that X and Y are random
variables with the joint density function:
ež ifx>0and y > 0;
f(x, y) =
otherwise.
Then
a. k =
b. k =
k = 1
d. k = 2
с.
Question 4:
Given the joint density function:
(6 – x – y
f(x, y) =
if 0 < x < 2 and 2 < y < 4;
8
otherwise.
The marginal distribution h(y) is:
(6-y
if 2<y< 4;
а. h(y) %3
8
otherwise.
(5-y
b. h(y) = -
if 2<y< 4;
4
otherwise.
(5+y
c. h(y) = ·
if 2<y< 4;
4
otherwise.
(5-у
d. h(y) =
1
if 2< y< 4;
4
otherwise.
Question 5:
Let X and Y be two independent random variables such that E[X]=3, E(Y)=4, V(X)=10 and
V(Y)=20. Then Ex -Y)²] is equal to:
a. 55
b. 31
с. 20
d. 15](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F67b260a0-8225-4026-b4fd-71b465e5f663%2F12d0ea09-d662-4286-bd76-57881664cc8b%2Fqqa8gh8l_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Question 3:
Let X and Y denote the lengths of life, in hours, of two viruses. Suppose that X and Y are random
variables with the joint density function:
ež ifx>0and y > 0;
f(x, y) =
otherwise.
Then
a. k =
b. k =
k = 1
d. k = 2
с.
Question 4:
Given the joint density function:
(6 – x – y
f(x, y) =
if 0 < x < 2 and 2 < y < 4;
8
otherwise.
The marginal distribution h(y) is:
(6-y
if 2<y< 4;
а. h(y) %3
8
otherwise.
(5-y
b. h(y) = -
if 2<y< 4;
4
otherwise.
(5+y
c. h(y) = ·
if 2<y< 4;
4
otherwise.
(5-у
d. h(y) =
1
if 2< y< 4;
4
otherwise.
Question 5:
Let X and Y be two independent random variables such that E[X]=3, E(Y)=4, V(X)=10 and
V(Y)=20. Then Ex -Y)²] is equal to:
a. 55
b. 31
с. 20
d. 15
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
