SOLUTION: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 17%. You would like to be 98% co
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-> SOLUTION: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 17%. You would like to be 98% co
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Question 1170545: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 17%. You would like to be 98% confident that your estimate is within 3% of the true population proportion. How large of a sample size is required? Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! the half-interval is z*sqrt(p*(1-p)/n)=0.03
this is 2.326*sqrt(0.17*0.83/n)=0.03
square both sides
5.410*0.1411/n=0.0009
so n=5.41*0.1411/0,0009=848.17 or 849
