What is the minimal sample size needed for a 95% confidence interval to have a maximal...

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What is the minimal sample size needed for a 95% confidence interval to have a maximal margin of error of 0.1 in the following scenarios? (Round your answers up the nearest whole number.) (a) a preliminary estimate for ρ is 0.14 (b) there is no preliminary estimate for p

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Given Margin of Error, E 0.1 Confidence level 95% 95% confidence level, z-score, z-1.96 a) Given that preliminary estimate fo

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