Confidence Intervals for one Population Mean in R (Z & t) – Summary & Raw Data

This video walks you through constructing both Z and T confidence intervals for a population mean: known and unknown population standard deviations & raw data.
You'll learn:
• How to calculate the standard error of the mean
• The difference between Z and T distributions
• Using R functions like qnorm and qt to find critical values
• Building confidence intervals with code examples