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In Example 2.5, we took an SRS to estimate the total acreage devoted to farming in the United States in 1992. Now, use the sample

In Example 2.5, we took an SRS to estimate the total acreage devoted to farming in the United States in 1992. Now, use the sample of states drawn with probability proportional to land area in Exercise 9, and then subsample five counties randomly from each state using file agpop.dat. Estimate the total acreage devoted to farming in 1992, along with its standard error.


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