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Paired t-test
Watch the video below...
https://drive.google.com/file/d/1H2_acvwD3PnkWhc-Lp7UBCfp8KJcLMWu/view
This was filmed for my students when we were remote learning, but the concepts are the same. This information is also explained in the cheat sheet on paired t-tests.
To get extra credit...
1) Watch the video
2) Fill in the notes for the attached sheets
3) Answer the last question You can check your solution here.
ap07_stat_sg (collegeboard.org)