You’re completely right here. I meant odds of 3:1 in general, as opposed to when they’re a complement. (Also, 90 + 30 is more than 100%.) I’ll edit it.
It’s only 75% and 25% when the sum of probabilities is 100%, but O(red car:green car) can be 3:1 when 60% of cars are red and 20% are green, or when 3% of cars are red and 1% are green. The remainder are different colours.
You’re completely right here. I meant odds of 3:1 in general, as opposed to when they’re a complement. (Also, 90 + 30 is more than 100%.) I’ll edit it.
It’s only 75% and 25% when the sum of probabilities is 100%, but O(red car:green car) can be 3:1 when 60% of cars are red and 20% are green, or when 3% of cars are red and 1% are green. The remainder are different colours.