A random variable X has the density function: fx (x) = { 3 (3-x) 1

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 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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A random variable X has the density function:
fx (x) = { 3
%3D
(3-x) 1<xr<3
10
otherwise
If the mean of X is equal to
13
then the variance of X is:
10'
18/35
O 13/100
None of the other options
7/20
Transcribed Image Text:A random variable X has the density function: fx (x) = { 3 %3D (3-x) 1<xr<3 10 otherwise If the mean of X is equal to 13 then the variance of X is: 10' 18/35 O 13/100 None of the other options 7/20
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