Mathematics, 21.02.2020 04:10 AysiaRamosLee
A researcher plans to conduct a similar poll on Michigan salaried workers. She is writing up a proposal and would like to include a budget for the sample size needed so she can report a 90% (conservative) confidence interval for the population proportion of all Michigan salaried workers who are "satisfied" with their relations with coworkers with a margin of error of 4%. What is the minimum sample size she could budget for?
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![MOE=z_{\alpha /2}\sqrt{\frac{p(1-p}{n}}\\0.04=1.645\times\sqrt{\frac{0.50(1-0.50}{n}}\\0.02432=\frac{0.50}{\sqrt{n}}\\n=[\frac{0.50}{0.02432} ]^{2}\\=422.68\\\approx423](/tpl/images/0518/8086/10b91.png)
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A researcher plans to conduct a similar poll on Michigan salaried workers. She is writing up a propo...
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