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## Statistics help, anyone?

I want to calculate a statistic involving several different factors, but don't know the math.

This person has different characteristics I wish to consider.  One occurs in about 10% of the general population, one in about 15% of the general population and one in about 7% of the general population, with no relationship between the three.  In other words, one is not more likely to be found in one of the other two groups by virtue of being in the third.

In a population of 34,000,000, how many such individuals are likely to occur?

Thanks much

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kelseymh7 years ago
I presume that you learned in your class about conditional probabilities: If A, B, and C are uncorrelated then P(A&B&C) = P(A)P(B)P(C).
7 years ago
Yea, that'll make sense to him/her... L
7 years ago
If they were paying attention in class, or have their textbook lying around to look at, it will. If not, well....
7 years ago
What's the probability of that?
7 years ago
Well, it's harder to calculate because the conditions are no longer uncorrelated. I'd need to know the full 2D (or n-D?) PDF to give you a quantitative result. However, since we're dealing with classical mechanics, I can tell you it's somewhere between zero and 100%.
7 years ago
I'll defer to your obviously superior knowledge of stat's (I did mechanics instead) L
7 years ago
Ah, the laws of mechanics. It either works or it doesn't. Probability is expressed based on the existence of snowballs in hell.
7 years ago
...or how long it takes Satan to skate to work.

L
ourmoneypit (author) 7 years ago
Seriously, folks, I'm 50 years old and have studied some physics, chemistry, economics, algebra, but never statistics. I'm not some student trying to fudge on an assignment lol
7 years ago
By the way, your profile here on I'bles is essentially empty. Since none of us are telepathic, there's no way to even guess who or what you are. Obviously you could put fake data into your profile, but putting that aside, with no data at all, and a question that looks very suspiciously like freshman homework, what do we have from which to guess?
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