Answer:
- $0.053
Step-by-step explanation:
Bet fee = $1
Probability of red = 18 / 38
Probability of black = 18/38
Probability of green = 2 / 38
x : ____1 _____ - 1 _____ - 1
P(x) : __ 18/38___ 18/38____ 2/38
Mean or expected value, E(X) = Σx*p(x) = (18/38) * * (-18/38) * (-2/38)
E(X) = - 0.052631
E(X) = - $0.053