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Math

Probability

How can you find the expectation value of a discrete random variable X?

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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Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

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Question

How can you find the expectation value of a discrete random variable X?

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Expert Solution

Step 1

The expected value of discrete random variable is X is the summation of the product of the values of the random variable and it's corresponding probability.

The mathematical notation for this is:

$E (X) = \sum_{} x P (X = x)$

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Solved in 2 steps

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$Discrete Probability Distributions$

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