Using the given margin of​ error, confidence​ level, and likely range for the observed value of the sample​ proportion, obtain a sample size that will ensure a margin of error of at most the one specified​ (provided, of​ course, that the observed value of the sample proportion is further from 0.5 than the educated​ guess).   margin of error=0.035​; confidence level=95​%; likely range=0.15 to 0.45     The required sample size is n=enter your response here. ​(Round up to the nearest whole​ number.)

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A:

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