Unit 7: Inference for Quantitative Data — Means

Confidence intervals and significance tests for one mean, paired means, and two means

This section contains 7 topics with 0 subtopics, 23 practice problems and 60 flashcards. Each topic includes comprehensive written notes, worked examples with detailed solutions, and interactive lessons for hands-on practice.

Topics Covered

• Hypothesis Testing Framework — Set up hypothesis tests with null and alternative hypotheses, significance level, and p-values.
• Type I and Type II Errors — Understand Type I and Type II errors, their probabilities, and the concept of power.
• Confidence Intervals for Means — Construct and interpret confidence intervals for a population mean using the t-distribution.
• Interpreting Confidence Intervals — Correctly interpret confidence intervals and understand confidence level meaning.
• Tests for Means — Perform one-sample and two-sample t-tests for means.
• Paired Data — Analyze paired data using the paired t-test and matched pairs designs.
• Inference for Two Sample Means (CI and Test) — Two-sample t-interval and t-test for the difference in two population means μ1 - μ2 using independent samples.

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