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We wish to estimate what percent of adult residents in a certain county are parents. Out of 600 adult residents sampled, 270 had kids. Based

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We wish to estimate what percent of adult residents in a certain county are parents. Out of 600 adult residents sampled, 270 had kids. Based on this, construct a $90 %$ confidence interval for the proportion $\pi$ of adult residents who are parents in this county. Give your answers as decimals, to three places. Check Answer CS.VS. 1304

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