The Table Below Is the Probability Table for a Random

question 89

Short Answer

The table below is the probability table for a random variable X. Find Var(X). $$\begin{array} { l | l l l l } \text { Outcome } & - 1 & 0 & 1 & 2 \\\hline \text { Probability } & \frac { 3 } { 7 } & \frac { 1 } { 7 } & \frac { 1 } { 7 } & \frac { 2 } { 7 }\end{array}$$ Enter just a reduced fraction of form $\frac { a } { b }$ .

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Definitions:

ArrayList Object

An object of a resizable array implementation class in programming, allowing for dynamic arrays that can grow as needed.

RemoveObject Method

Not a specific method; however, in many programming languages, methods exist to remove objects from a collection or data structure.

ArrayList Class

A resizable array implementation of the List interface in Java, providing methods to manipulate the size of the array that holds the elements.

Generic Class

A class with one or more type parameters that enables it to operate on objects of various types while providing compile-time type safety.