Here, I converted the question so that it was strictly what the OP asked written in LaTeX notation and deleted an incorrect tag. However, the person who edited it after I did changed some E values to $\mathbb{E}$ and remove some dollar signs (which was unnecessary, as not everyone uses $\mathbb{E}$, and just removing $ signs for numbers is a very trivial edit), and added back the incorrect tag.
I don't have the reputation to rollback this edit.
What do I do in this case?