Specialist Mathematics · Unit 4 · Statistical inference · Confidence intervals for means

Model and solve problems that involve interval estimates for sample means, with and without technology.

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Understand and use the approximate confidence interval (𝑥̅ − 𝑧 𝑠 √𝑛, 𝑥̅ + 𝑧 𝑠 √𝑛), as an interval estimate for 𝜇, the population mean, where 𝑧 is the appropriate quantile for the standard normal distribution.
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