Lemma
EasyHypothesis testing
OpenStax, Introductory Statistics 2e §10.1 Two Population Means with Unknown Standard Deviations · Example 12 · Statistics · Hypothesis testing

Two Population Means with Unknown Standard Deviations · Example 12

Calculate Cohen’s d for. Is the size of the effect small, medium, or large? Explain what the size of the effect means for this problem.

~5 minWritten answer · compare with the solution

OpenStax, Introductory Statistics 2e · §10.1 Two Population Means with Unknown Standard Deviations · Example 12

Stuck? A gentle nudge

No hints for this one.

Something off?
Workspace
Your working

Check your full solution

Upload photos of your handwritten work or a PDF, and Lemma will read it and tell you whether it's right — and where it first goes wrong if not.