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A nursery sells trees of different types and heights. Suppose that 75 pine trees are sold for planting at City Hall. These 75 trees average 60 inches in height with a standard deviation of 16 inches.
Using this information, construct a 95% confidence interval for the mean height of all trees in the nursery. A. 60 + 1.96(1.85). B. 60 + 1.96(16). C. 0.8 + 1.96(16). D. 0.8 + 1.96(1.85). |