Confidence Intervals for One Mean: Sigma Known (Z Method) @jbstatistics

Uploaded February 2012 | Updated September 2026, 2 hours ago

I have an updated and revised version of this video available at youtu.be/KG921rfbTDw. Please watch the improved version.

An introduction to confidence intervals for the population mean mu. These methods are appropriate when we are sampling from a normally distributed population, and the population standard deviation sigma is known. When the population standard deviation is not known, as is usually the case, we need to use a slightly different method (a method based on the t distribution).

Confidence Intervals for One Mean: Sigma Known (Z Method)

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