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Mathematics, 18.08.2020 17:01 DakotaOliver
An economist wishes to conduct a survey in two different cities in the same county to determine the difference in the proportions of residents who believe that economy is improving under president Trump. A 99% confidence interval is to be constructed for the difference between the proportions. If the sample sizes for both cities are to be equal, find the minimum sample size needed for each city so that the margin of error not to exceed 6%.
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An economist wishes to conduct a survey in two different cities in the same county to determine the...
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