I had been calculating my t-tests by hand, based on an example from a textbook. But I wanted to check if I was doing it right. My initial Google results gave me a bumch of tutorials showing how to do t-tests but these all seemed to rely on a Microsoft Excel Add-in which was not included in the Excel that I have. After more searching, I finally found a video that does it WITHOUT requiring special add-ins or 3rd party tools. Booyeah! Thank you to the person who made this video, Jim Grange:
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