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 wheel i
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Question 326904: 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 Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 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
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P(red) = 18/38
P(black) = 18/38
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P(red then black) = (18/38)^2 = 0.2244
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Cheers,
Stan H.
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