Question: In the article Bottled Natural Mineral Waters in Romania Environmental

In the article “Bottled Natural Mineral Waters in Romania” (Environmental Geology Journal, Vol. 46, Issue 5, pp. 670–674), A. Feru compared the mineral, ionic, and carbon dioxide content of mineral-water source locations in Romania. Of 31 randomly selected source locations, 22 had natural carbonated natural (NCN) mineral water. Determine a 95% confidence interval for the proportion of all mineral-water source locations in Romania that have NCN mineral water. Extending the Concepts and Skills

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