An ornithologist who specializes in cockatoos in Australia decides to estimate the cockatoo population in a certain region. To do so, he traps 54 cockatoos and marks them. After releasing the cockatoos and waiting a bit, he traps 290 cockatoos and observes that 29 of them are marked. To the nearest whole number, what is the best estimate for the cockatoo population?

540

Step-by-step explanation:

Let the estimate total population=y

Initially, out of a total of y, 54 are marked.

Then out of a sample of 290 cockatoos, 29 of them are marked.

We take the ratio of the population to the sample and do same for the number of marked in each category.

y:290 = 54: 29

Cross multiplying

y X 29 = 290 X 54

Divide both sides by 29 to obtain y.

y= 54 X 10 =540

The best estimate of the cuckatoo population is 540

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step-by-step explanation:

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step-by-step explanation: