Quote:
Originally Posted by Average Guy
I am a statistician and the question is not that difficult.
The assumptions that you made are:
1 in 10 married people are lefthanded
Twice as many married men are lefthanded than married women
In order to meet those two assumptions, the odds of a married man being lefthanded would be 2/15 and a married woman being left handed 1/15. (Taken together that gives you 3 out of 30 married people being lefthanded, which is the same as 1 out of 10.)
So, if a random selection of one male and one female were made, the probability that they were both lefthanded would be 2/15 times 1/15, which is 2/225, or 1 out of 112.5.
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I'm not a statistician. I didn't know what to do with the numbers. I do know a lot of people. Until today, I didn't know any that both husband and wife were left handed. Go figure.