A researcher wants to determine the proportion of elm trees in Superior, Wisconsin, dying of Dutch elm disease. Past experiments based on large sample sizes have shown this proportion to be 0.3. What sample size does the researcher need in order to estimate this proportion to within 0.04 with 95% confidence?
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The Answer of A researcher wants to determine the proportion of elm trees in Superior, Wisconsin, dying of Dutch elm disease. Past experiments based on large sample sizes have shown this proportion to be 0.3. What sample size does the researcher need in order to estimate this proportion to within 0.04 with 95% confidence?
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A Researcher Wants to Determine the Proportion of Elm Trees