SOLUTION: Ok just one more: As part of a conservation effort for a lake, 40 fish are caught, tagged, and then released. Later 80 fish are caught. Four of the 80 fish are found to have tag

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Question 61776This question is from textbook
: Ok just one more:
As part of a conservation effort for a lake, 40 fish are caught, tagged, and then released. Later 80 fish are caught. Four of the 80 fish are found to have tags. Estimate the number of fish in the lake.
Thank YouThis question is from textbook

Answer by stanbon(48558) (Show Source):
You can put this solution on YOUR website!
40 fish are caught, tagged, and then released. Later 80 fish are caught. Four of the 80 fish are found to have tags. Estimate the number of fish in the lake.
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Use a proportion comparing the sample and the population, as follows:
80/4=x/40
x=40*20
x=800 fish in the lake
Cheers,
Stan H.