Researchers would like to assess the overall health of white pine trees in a state park. Using a computer program, the researchers selected 100 random points in the state park and assessed the trees closest to the selected points. Of the 100 trees selected, 24 showed damage to their lower limbs. Which of the following describes the sample in this setting?
Answer
A
all white pine trees in the world
B
the 24 trees that showed damage
C
the 100 trees checked for damage
D
all white pine trees in the state park
Explanation
The sample is the group of trees the researchers actually selected and assessed. Here, they checked 100 trees closest to randomly chosen points. The 24 damaged trees are only a subset of that sample, while all white pines in the park are the population of interest. So the sample is the 100 trees checked for damage.
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