6. Let W = Yu, where Y~n(μ, o²). Find the moment-generating function of W. 1

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question

Number 6

6. Let W = Yu, where Y~n(u, o2). Find the moment-generating function of W.
The Moment-generating Function Method of finding a sum of variables.
PROPERTY D
If X and Y are independent random variables with mgf's Mx and My and Z =
X + Y, then Mz(t) = Mx (1)My (1) on the common interval where both mgf's
exist.
Proof
Mz(t) = E(e¹z)
= E(e¹X+¹Y)
= E(e¹xe¹)
1
From the assumption of independence,
Mz(t) = E(e¹x)E(e¹)
= Mx (1) My (1)
1/2
Transcribed Image Text:6. Let W = Yu, where Y~n(u, o2). Find the moment-generating function of W. The Moment-generating Function Method of finding a sum of variables. PROPERTY D If X and Y are independent random variables with mgf's Mx and My and Z = X + Y, then Mz(t) = Mx (1)My (1) on the common interval where both mgf's exist. Proof Mz(t) = E(e¹z) = E(e¹X+¹Y) = E(e¹xe¹) 1 From the assumption of independence, Mz(t) = E(e¹x)E(e¹) = Mx (1) My (1) 1/2
Expert Solution
steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman