Question

Expected Value Question? Seems pretty simple?

Two standard dice are rolled. What is the expected number of ones obtained?

Answer 1

I know it would be pretty simple, but I don't really understand what it means by the NUMBER of ones.

Answer 2

@wgary the number of \(1\)s refers to the number of times \(1\) was the result of a die roll when we roll two dice

Answer 3

But, how would I get that? just 1/5*1/5?

Answer 4

consider a table of possible dice roll pair outcomes: