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Mathematics, 10.03.2020 21:30 peno211
Reading proficiency: An educator wants to construct a 99.5% confidence interval for the proportion of elementary school children in Colorado who are proficient in reading.
The results of a recent statewide test suggested that the proportion is 0.69.
Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.07?
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