Problema Solution
a regional forestry division wanted to estimate the number of deer in a particular national park. they caught and tagged 72 deer and released them back into the park. later they selected a sample od 315 deer. of the 315 deer, 21 were tagged. assuming that the proportion of tagged deer in the sample holds for all the deer in the forest, what is the best estimate for the number of deer in the park?
Answer provided by our tutors
Let x = number of deer in the park.
Assuming the proportions are the same:
21 : 315 = 72 : x
by solving we find
x = 1080 deer
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There are approximately 1080 deer in the park.