For discrete random variables,
Therefore, if
Then, since you're paying 5 dollars to play.
And since the die is a fair dodecahedron die.
Thus,
I really don't get this question and my work's due tomorrow any help is really appreciated!
A game consists of rolling a dodeacahedral (12 faced) die and receiving the dollar amount equivalent to the roll. If the cost to play the game is $5 what is the expected payout for each round that is played?
We're on discrete probability chapter, according to the back of my text book the answer should be $5
I hope someone can help me, thanks in advance!!