Concept of discrete random variables:
Imagine you are in a game show. There 20 prizes hidden on game board with100 spaces. one prize is worth $100, nine are worth $20 and another ten are worth $10. you have to pay $10 to the host if your choice is not correct let the random variable x be the money you get or lose. (show all work )
a) x p(x)
-$10
$10
$20
$100
b) what is your expected winning or loss in this game? be specific in your answer whether it's winning or loss