The Table Below Is the Probability Table for a Random

question 83

Short Answer

The table below is the probability table for a random variable X. Find E(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:

Facial Expressions

The movements or positions of the muscles beneath the skin of the face, which convey the emotional state of an individual to observers.

Anger

A strong feeling of annoyance, displeasure, or hostility; an emotional response to perceived provocation or threat.

Surprise

An emotional state or reaction caused by an unexpected event, which can vary in intensity from mild interest to shock.

Happiness

An emotional state ranging from simple satisfaction to deep happiness, defining a sense of completeness and pleasure.