In the game of roulette, a player can place a

$4

bet on the number

10

and have a

138

probability of winning. If the metal ball lands on

10,

the player gets to keep the

$4

paid to play the game and the player is awarded an additional

$140.

Otherwise, the player is awarded nothing and the casino takes the player's

$4.

Find the expected value E(x) to the player for one play of the game. If x is the gain to a player in a game of chance, then E(x) is usually negative. This value gives the average amount per game the player can expect to lose.

Question content area bottom

Part 1

The expected value is

$enter your response here.