E[# needed] = E[SUM(i from 1 to n) Xi] = SUM(i from 1 to n)E[Xi]
how do you guys get the symbols (sums, integrals, etc) and make fractions??
I just open someone other page that has the simble I want, then I copy and past it. Otherwise you can always look it up on line I beleave the language is 'LaTeX'. -Seraj
