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Elina [12.6K]
3 years ago
7

An american roulette wheel has 38 slots, of which 18 are red, 18 are black, and 2 are green (0 and 00). if you spin the wheel 38

times,
a.intuitively, how many times would you expect the ball to wind up in a green slot?
b.use the formula for expected value to verify your intuition.
Mathematics
1 answer:
Alexeev081 [22]3 years ago
3 0
Intuitively, one would think the ball would land in the green spot 2 out of the 38 times, since there are 38 slots and 2 are green.

The probability that it lands in a green section is 2/38.  Multiplying this by the number of times the experiment is performed, we get (2/38)(38) = 2.
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