Question: 2. A study is under way to determine the average height of all 32,000 adult pine trees in a certain national forest. The heights of

2. A study is under way to determine the average height of all 32,000 adult pine trees in a certain national forest. The heights of 500 randomly selected adult pine trees are measured and analyzed. The sample in this study is: a. the average height of the 500 randomly selected adult pine trees. b. the average height of all the adult pine trees in this forest. c. all the adult pine trees in this forest. d. the 500 adult pine trees selected at random from this forest

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