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Julius is studying populations of robins in the local area. He counts 12 robins and marks 7 of them. Later, he recaptures 3. About how large is the local robin population?
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Julius is studying populations of robins in the local area. He counts 12

robins and marks 7 of them. Later, he recaptures 3. About how large is the local robin population?

User Thernys
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1 Answer

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Well, he recaptured 3 out of the 7 he marked. We can presume that the other 5 are gone. The population would be 8 robins, because 4 of the robins Julius marked were not recaptured. Therefore, the population is around 8-10 robins.
User FoxPro
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