SOLUTION: a roulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, 18 are black. the ball is equally likely to land in any slot. the roulette whe

Algebra ->  Probability-and-statistics -> SOLUTION: a roulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, 18 are black. the ball is equally likely to land in any slot. the roulette whe      Log On


   

Question 327123: a roulette wheel has 38 slots in which the ball can land. two of the slots are
green, 18 are red, 18 are black. the ball is equally likely to land in any slot.
the roulette wheel is going to be spun twice and the outcome of the two spins
are independant.
the probability that it lands on red the first time and black the second time
is:
a- 0.2136
b- 0.2244
c- 0.2500
d- 0.5000
PLEASE HELP
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
P(red)=18%2F38=9%2F19
P(black)=18%2F38=9%2F19
P(red then black)=%289%2F19%29%289%2F19%29=81%2F361=0.2244