Earlier this year, 240 caribou were caught and tagged. In a recent survey, 60 out of 350 caribou that were caught had been tagged. What is the approximate size of the caribou population? Show all work, use proper notation and provide a therefore statement.

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Earlier this year, 240 caribou were caught and tagged. In a recent survey, 60 out of 350 caribou that were caught had been tagged. What is the approximate size of the caribou population? Show all work, use proper notation and provide a therefore statement.

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Step 1

Given
The total number of caribou tagged (population) =240
The number of caribou caught this year (sample) =350
The number of tagged among caribou caught this year (sample) =60

Let the total number of caribou population size be X .

The proportion of caribou caught in sample be p =60350

The proportion of caribou caught in population be p^=240X

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