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According to a study, 77% of adults ages 18-29 years had broadband Internet access at home in 2011. A researcher wanted to estimate the proportion of undergraduate college students (18-23 years) with access, so she randomly sampled 186 undergraduates and found that 166 had access. Estimate the true proportion with 99% confidence. Round your answers to three decimal places. Source: World Almanac 2012. Sp

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Answer #1

Here first we need to find the sample proportion value by using the given sample

ズ· ニ166 1.892 473 9;ニ1-0.892473-0.107527 o-8 92 473 (o 107527 19 6 6-892473 ± 2、571 ニ0.892-47 3土0.0585)2- ニ(0.833961ノ0.950985 (o. 8 34, ,o. 951)

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