Question

I kinda need an explanation on how to solve this.

Answer 1

36.

Explanation:

There were 10 elephants that were marked. Only 4 of those were counted. The other 26 were new elephants. Because of this, we know that there were 6 other elephants that were not counted. There were the 30 counted, and the other 6. Add those and you get 36.

Answer 2

75 elephants

Explanation:

This sort of population study assumes that the probability of catching any particular elephant is the same as for any other.

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We are given that there is a population of 10 painted elephants, of which 4 of them are caught in a sample of 30 elephants. We know the total population of painted elephants is 10/4 = 2.5 times the number caught in the sample. This suggests the total population of elephants is 2.5 times the sample size.

estimated population = 2.5 × 30 = 75 . . . elephants