A population of N alligators is to be sampled in order to obtain an approximate measure
Chapter 5, Problem 5.117(choose chapter or problem)
A population of N alligators is to be sampled in order to obtain an approximate measure of the difference between the proportions of sexually mature males and sexually mature females. Obviously, this parameter has important implications for the future of the population. Assume that n animals are to be sampled without replacement. Let Y1 denote the number of mature females and Y2 the number of mature males in the sample. If the population contains proportions p1 and p2 of mature females and males, respectively (with p1 + p2 < 1), find expressions for E Y1 n Y2 n and V Y1 n Y2 n . 5.1
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