The data set cherry.dat, from Hand et al. (1994), contains measurements of diameter (inches), height (feet), and
Question:
a. Plot volume vs. diameter for the 31 trees.
b. Suppose that these trees are an SRS from a forest of N = 2967 trees and that the sum of the diameters for all trees in the forest is tx = 41,835 inches. Use ratio estimation to estimate the total volume for all trees in the forest. Give a 95% CI.
c. Use regression estimation to estimate the total volume for all trees in the forest.
Give a 95% CI.
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