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Cattura ricattura

  1. 1. Metodo cattura e ricattura 1. Al Dryden Lake in New York, alcuni ricercatori, marcano, e rilasciano 213 salmoni. Più tardi catturano 104 salmoni e trovano che 13 sono marcati. Stima il numero di salmoni in Dryden Lake. 2. Suppose that the high school in a town has 500 students. A random survey of 200 people in the town finds 40 high school students. What is the estimate for the number of people in the town? 3. Visitors conducted a capture-recapture experiment to determine the number of taxicabs in Edinburgh, Scotland. On the first day, observers saw 48 taxicabs. The next day they observed 52 cabs, 10 of which they had seen the previous day. What is the estimate for the number of taxicabs in Edinburgh? Thanks to: http://www.horton.ednet.ns.ca/staff/wheadon/index.htm

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