Return to Question

I would like to calculate the following with Mathematica:

Let $X$ be a random variable with probability function $$p(x)= \{ \begin{matrix} \frac{x}{6} & \text{for }x \in \{1,2,3\}\\ 0 & \text{Otherwise} \end{matrix}$$ Calculate $P(X \leq 2)$, $E(X)$ and $var(x)$

My major problem is to create the probability function with the correct distribution since there haven't been any specific distribution informed in the task. So how do I solve this?

If it is any help, then the results are respectively:

{0.5, 2.333, 0.5556}

I would like to calculate the following with Mathematica:

Let $X$ be a random variable with probability function $$p(x)= \left\{ \begin{matrix} \frac{x}{6} & \text{for }x \in \{1,2,3\}\\ 0 & \text{Otherwise} \end{matrix}\right. $$ Calculate $P(X \leq 2)$, $E(X)$ and $var(x)$

My major problem is to create the probability function with the correct distribution since there haven't been any specific distribution informed in the task. So how do I solve this?

If it is any help, then the results are respectively:

{0.5, 2.333, 0.5556}

I have this task I would like to calculate with Mathematica.

Let X be a random variable with probability function

$$p(x)= \{ \begin{matrix} > \frac{x}{6} & \text{for }x \in \{1,2,3\}\\ > 0 & \text{Otherwise} >\end{matrix} >$$

Calculate $P(X \leq 2),$ EX and var(x)

My major problem is to create the probability function with the correct distribution since there haven't been any specific distribution informed in the task. So how do I solve this?

If it is any help, then the results are respectively:

{0.5, 2.333, 0.5556}

I would like to calculate the following with Mathematica:

Let $X$ be a random variable with probability function $$p(x)= \{ \begin{matrix} \frac{x}{6} & \text{for }x \in \{1,2,3\}\\ 0 & \text{Otherwise} \end{matrix}$$ Calculate $P(X \leq 2)$, $E(X)$ and $var(x)$

My major problem is to create the probability function with the correct distribution since there haven't been any specific distribution informed in the task. So how do I solve this?

If it is any help, then the results are respectively:

{0.5, 2.333, 0.5556}

I have this task I would like to calculate with Mathematica.

"Let X be a random variable with probability function

$$p(x)= \{ \begin{matrix} \frac{x}{6} & \text{for }x \in \{1,2,3\}\\ 0 & \text{Otherwise} \end{matrix} $$

Calculate $P(X \leq 2),$ EX and var(x)"

My major problem is to create the probability function with the correct distribution since there haven't been any specific distribution informed in the task. So how do I solve this?

If it is any help, then the results are respectively: (0.5, 2.333, 0.5556)

I have this task I would like to calculate with Mathematica.

Let X be a random variable with probability function

$$p(x)= \{ \begin{matrix} > \frac{x}{6} & \text{for }x \in \{1,2,3\}\\ > 0 & \text{Otherwise} >\end{matrix} >$$

Calculate $P(X \leq 2),$ EX and var(x)

My major problem is to create the probability function with the correct distribution since there haven't been any specific distribution informed in the task. So how do I solve this?

If it is any help, then the results are respectively:

{0.5, 2.333, 0.5556}