SOLUTION: 2.2 Roulette wheel: The game of roulette involves spinning a wheel with 38 slots: 18 red, 18 black, and 2 green. A ball is spun onto the wheel and will eventually land in a slot,

Algebra ->  Probability-and-statistics -> SOLUTION: 2.2 Roulette wheel: The game of roulette involves spinning a wheel with 38 slots: 18 red, 18 black, and 2 green. A ball is spun onto the wheel and will eventually land in a slot,       Log On


   

Question 1157141: 2.2 Roulette wheel: The game of roulette involves spinning a wheel with 38 slots: 18 red, 18 black, and 2 green. A ball is spun onto the wheel and will eventually land in a slot, where each slot has an equal chance of capturing the ball.

a) You watch a roulette wheel spin 9 consecutive times and the ball lands on a red slot each time. What is the probability that the ball will land on a red slot on the next spin?
(please round to four decimal places)
b) You watch a roulette wheel spin 220 consecutive times and the ball lands on a red slot each time. What is the probability that the ball will land on a red slot on the next spin?
(please round to four decimal places)
Answer by ikleyn(52803) About Me  (Show Source):
You can put this solution on YOUR website!
.

The answer to both questions,  a)  and  b),  is in this key phrase of the condition 

    "each slot has an equal chance of capturing the ball.""

It means that the result of each next experiment  DOES  NOT  DEPEND  on prehistory.

The answer for probability is   18%2F38.