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Gulf of Mexico problem

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1A. An island in the Gulf of Mexico is approximately circular, with a radius of 5 kilometers. There is no emigration or immigration. In a mark-recapture study of an anole population, 115 anoles were captured, marked, and released. In a second capture, 175 snakes were captured. 12 of these had marks.
What is the estimated number of anoles in this population?

1B. Given that the island is circular, what is the approximate density of this population? (the formula for the area of a circle is r2).

1C. If the population was sampled 1 year later and found to contain 2000 individuals, was the value of r greater than, smaller than, or equal to 0?

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1A. An island in the Gulf of Mexico is approximately circular, with a radius of 5 kilometers. There is no emigration or immigration. In a mark-recapture study of an anole population, 115 anoles were captured, ...

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