A random variable X can take on only three values: 1, 3 and 0. X takes value 1 with probability and value 0 with remaining probability. What is the mean of X, , value 3 with probability E[X]? 25/12 3 4/3 9/4 5/2 2

A random variable X can take on only three values: 1, 3 and 0. X takes value 1 with probability and value 0 with remaining probability. What is the mean of X, , value 3 with probability E[X]? 25/12 3 4/3 9/4 5/2 2

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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Question

A random variable X can take on only three values: 1, 3 and 0. X takes value 1 with probability
and value 0 with remaining probability. What is the mean of X,
value 3 with probability
E[X]?
O
25/12
3
4/3
9/4
5/2
2

Expert Solution

Step 1

Given that

Probability mass function of X is

x	0	1	3
P(x)	1/12	1/4	2/3

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