Unformatted text preview: √ 900 × . 47 = 14 . 1 ≈ 14. The SE of the percentages is 14 900 × 100% = 1 . 55 ≈ 1 . 6%. (c) How much is the estimate oﬀ from the true percentage for the following box: 2 billion ’s, 1 billion 1 ’s . Explain, without recalculating everything. [ 4 points] Solution Since the population in both cases is quite large in relation to the sample the accuracy depends on the sample size. So the SE here is also about 1.6%. 1...
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 Spring '11
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 Math, Statistics, Simple random sample, Names of large numbers, Million

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