Why does the solutions show that we should subtract 2? I understand how to get the expected value, but not why I should subtract by 2.
Viridiana: March 17, 2015, 12:49 a.m.
Is it because we want to exclude the 2 we originally had?
martha2A: March 18, 2015, 9:39 p.m.
The question asks for the expected amount that we will earn and states that we start of with two dollars so in order to obtain the expected amount of earnings, we have to subtract the 2 dollars we originally started off with.