You are playing a game where you are rolling a fair 6-sided number cube. It costs $1.00 for every roll. If you roll an even number, you win $3.00. If you roll an odd number, you win nothing. Which of the following is the expected value of this game?
a) expected value= $-0.50
b) expected value= $0.50
c) expected value= $1.00
d) expected value= $-1.00
