One-Sample t-Test for the Population Mean

Develop one-sample t-test fluency when population standard deviation is unknown. Calculate test statistics, degrees of freedom, confidence margins and signed standardized effects, then assess Q-Q plots, outliers, selection bias and degenerate data. Later challenges connect effect size to evidence and examine unit changes and data corrections. Prerequisites: Z-tests, sample variance and confidence intervals. Includes single-select and multiselect practice with worked solutions and explanations of distractors.

References: 1.3.5.2 Mean limits and hypothesis test, Standardized mean differences and within-subject designs, equations for d and difference SD.