Two-Sample z-Test for Population Means
A two-sample z-test for population means compares two population means. It is appropriate when the population standard deviations are known and the sample sizes are large.
Resources
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Calculator for a two-sample z-test:
z-Test for Two Samples Calculator
This web calculator conducts a z-test for the difference between two populations' means. The calculator includes a video definition, an explanation of the formula and practice examples.
Author: Statistics Kingdom.