Hypothesis Tests on One Mean: t or z? @jbstatistics

Uploaded March 2012 | Updated September 2026, 2 hours ago

I have an updated and improved version of this video available at: youtu.be/vw2IPZ2aD-c

I look at at what influences the choice of the t statistic or z statistic in one-sample hypothesis tests on the population mean mu, then work through an example of a t test. I compare the p-value of the t test to what we would have found had we (incorrectly) used a z test.

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