Lifetime of a certain hardware is a continuous random variable with density (a) (b) к (K-2 for 0 < x < 5 for all other x 25 f(x) = { Find K. What is the expectation of the lifetime?
Lifetime of a certain hardware is a continuous random variable with density (a) (b) к (K-2 for 0 < x < 5 for all other x 25 f(x) = { Find K. What is the expectation of the lifetime?
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...
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![For a Normal random variable X, with E(X)=2, and Var(X)= 2,
compute
(a)
(b)
P(X ≤ 2.39)
P(|X| <3)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F44e710c5-82f1-4975-896c-cdeba81321cf%2F5f09314d-703e-4f3a-add1-42be760ab7d7%2F2waytlf_processed.jpeg&w=3840&q=75)
Transcribed Image Text:For a Normal random variable X, with E(X)=2, and Var(X)= 2,
compute
(a)
(b)
P(X ≤ 2.39)
P(|X| <3)
![Lifetime of a certain hardware is a continuous random variable
with density
(a)
(b)
K-, for 0<x<5
for all other x
25
f(x) = {
Find K.
What is the expectation of the lifetime?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F44e710c5-82f1-4975-896c-cdeba81321cf%2F5f09314d-703e-4f3a-add1-42be760ab7d7%2F94s14zd_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Lifetime of a certain hardware is a continuous random variable
with density
(a)
(b)
K-, for 0<x<5
for all other x
25
f(x) = {
Find K.
What is the expectation of the lifetime?
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i think that's a bad calculation at the end it should be 25/12 instead of 55
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