(b) Compute the marginal distributions of R and O. (c) What is the distribution of O? Are R and O independent random variables? If so, prove it, otherwise, (d) prove they are dependent.
(b) Compute the marginal distributions of R and O. (c) What is the distribution of O? Are R and O independent random variables? If so, prove it, otherwise, (d) prove they are dependent.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question

Transcribed Image Text:A point is picked at random inside the unit disk
D = {(x, y) E R² | x² + y² < 1}.
Let the random variable R denote the length of the line segment between the origin and
the randomly picked point, and let the random variable e denote the angle between
this line segment and the positive horizontal axis (O is measured in radians and so
0 <O< 2n).
(a) (4 points) Show that the joint distribution of R and O is
if 0 <r < 1, 0 <0 < 2n,
fr,e(r, 0)
otherwise.
Hint: Compute first the CDF FR.e(r, 0). Then, to obtain the PDF, take a derivative
in 0 and followed by a derivative in r:
().
fR,e(r, 0) :
ər (a0FRe(r, 0))
Or \ a0
(b)
Compute the marginal distributions of R and O.
(c)
What is the distribution of O?
(d)
prove they are dependent.
Are R and O independent random variables? If so, prove it, otherwise,
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