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?         n=

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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?

        n=

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Step 2

Computing the sample size:

Thus, it is given that the confidence level is 99%. Therefore, the significance level, α = 0.01.

Statistics homework question answer, step 2, image 1

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