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A roulette wheel has 38 slots in which the ball can land. Two of the slots are green, 18 are red, and 18 are black. The ball is equally likely to land in any slot. The roulette wheel is going to be spun twice and the outcomes of the two spins are independent. The probability that it lands on red at least once is:

a. 0.5
b. 0.25
c. 0.4488
d. 0.2244

Respuesta :

pedrocarratore

Answer:

0.7230

Step-by-step explanation:

There are 18 red slots out of 38 total slots. The probability that the ball lands on red at least once is 100% minus the probability that it does not land on red on either try:

[tex]P(R>0) = 1-P(R=0)\\P(R>0)=1-(\frac{38-18}{38})^2\\ P(R>0)=0.7230[/tex]

The probability that the wheel lands on red at least once is 0.7230.

All of the provided answer choices are incorrect.

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