SOLUTION: If a certain medical condition is found to exist in 4.7 out of every 100,000 persons in the general population, what are the odds of finding two people with this medical condition

Question 889509: If a certain medical condition is found to exist in 4.7 out of every 100,000 persons in the general population, what are the odds of finding two people with this medical condition sitting next to each other on a bus (completely at random, no doctors or heredity or outside factors having any influence on their location)?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If a certain medical condition is found to exist in 4.7 out of every 100,000 persons in the general population, what are the odds of finding two people with this medical condition sitting next to each other on a bus (completely at random, no doctors or heredity or outside factors having any influence on their location)?
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Probability a random individual has the desease = 4.7/100,000 = 0.000047
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Ans: Probability 2 random have desease = (0.000047)^2 = 2.209x10^-9
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Cheers,
Stan H.
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