The random variable $ Y $ has the distribution shown below:\[\begin{array}{c|c|c}\text{Value} & 1 & 4 \\\hline\text{Probability} & 0.2 & 0.8 \\\end{array}\]The mean of $ Y $ is 3.4. What is the standard deviation of $ Y $?

Given: Value 1 4 Probability 0.2 0.8 Mean, E(Y) = 3.4

Answered: The random variable Y has the…

The random variable Y has the distribution shown below: Value 1 4 Probability 0.2 0.8 The mean of Y is 3.4. What is the standard deviation of Y?

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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The random variable $ Y $ has the distribution shown below:

\[
\begin{array}{c|c|c}
\text{Value} & 1 & 4 \\
\hline
\text{Probability} & 0.2 & 0.8 \\
\end{array}
\]

The mean of $ Y $ is 3.4. What is the standard deviation of $ Y $?

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