Topic: Unit 4: Inference for Quantitative Data: Means

Reading Degrees of Freedom From 2-SampTTest Output

Why Overlapping Individual Intervals Are Misleading

Writing the Full Two-Sample t Interval Solution

Using an Interval to Judge a Difference Between Groups

Effect of Unequal Sample Sizes on Standard Error

Interpreting a Confidence Interval for mu1 minus mu2

The Form of a Two-Sample t Interval

Using 2-SampTInt on Your Calculator

Standard Error for a Difference in Means

Paired t Conclusions About Causation and Generalization