Question: Select the correct answer. In an attempt to be environmentally friendly, the city council decides that there must be at least 18 trees on each

Select the correct answer. In an attempt to be environmentally friendly, the city council decides that there must be at least 18 trees on each block in the city. A sample of 20 blocks was randomly surveyed, with these results (number of trees per block): 24, 17, 7, 20, 28, 27, 10, 21, 30, 8, 30, 27, 22, 27, 27, 13, 27, 20, 24, 17 What is the sample mean number of trees per block ? A. 17.7 B. There is insufficient data to answer this question. C. 21.3 D. 24

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