Question

Roulette is a casino game that involves players betting on where a ball will land on a spinning wheel. An American roulette wheel has 38 numbered slots — half of the slots from 1 to 36 are red and the other half are black. Slots 0 and 00 are both green.
Suppose that a player bets $1 on the color red. If the ball lands in a red slot, the player gets their initial $1 back plus a payout of $1. If the ball doesn't land in a red slot, they lose their $1 bet. Let X= the player's net gain from a $1 bet on a the color red. Here is the probability distribution of X:


Win Lose

X=net gain $1 -$1

P(X) 18/38 20/38


Calculate the mean of X

You may round your answer to the nearest thousandth.

Answer 1

Answer:

-2/38

Step-by-step explanation:

Answer 2

Answer:   -0.053

Step-by-step explanation:

1•(18/38) + -1 •(20/18) = -0.053