4.144 Consider a random variable Y with density function given by f(y)=ke-²/2 a Find k. b Find the moment-generating function of Y. c Find E(Y) and V (Y). -∞
4.144 Consider a random variable Y with density function given by f(y)=ke-²/2 a Find k. b Find the moment-generating function of Y. c Find E(Y) and V (Y). -∞
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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![**Problem 4.144**
Consider a random variable \( Y \) with density function given by:
\[
f(y) = k e^{-y^2/2}, \quad -\infty < y < \infty.
\]
a. Find \( k \).
b. Find the moment-generating function of \( Y \).
c. Find \( E(Y) \) and \( V(Y) \).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd6f18ab9-3892-49f5-91ed-269d155e1486%2F31199a0e-9e4d-405c-a31e-f6835145ce3f%2F9r3sw4_processed.png&w=3840&q=75)
Transcribed Image Text:**Problem 4.144**
Consider a random variable \( Y \) with density function given by:
\[
f(y) = k e^{-y^2/2}, \quad -\infty < y < \infty.
\]
a. Find \( k \).
b. Find the moment-generating function of \( Y \).
c. Find \( E(Y) \) and \( V(Y) \).
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