You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p∗=12%. You would like to be 99% confident that your estimate is within 0.2% of the true population proportion.¿How large of sample size is required if you use the previous evidence for the population proportion?n =¿How large of sample size is required if you do not use the previous evidence for the population proportion?
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