New posts in Expectation

Can one tell based on the moments of the random variable if it is continuos or not

Does $\mathbb{E}\left[X\right]=\infty$ imply $\mathbb{E}\left[X^{2}\right]=\infty$?

Proving $E[X^4]=3σ^4$

Hypergeometric Random Variable Expectation

Probability of number of people who know a rumor

Rolling a die until two rolls sum to seven

Expected value problem with cars on a highway

Random solving of a Rubik cube .

Is the kth central moment less than the kth raw moment for even k?

How many throws of a die until every possible result is obtained?