Two sample z-test

Two sample z-test,

Definition of Two sample z-test:

  1. A hypothesis test that is used to compare two sample groups to determine if they have originated from the same population. The two sample z-test requires the standard deviation to be known or the original size of the sample taken to be larger than 30, with a population that falls within a system of normal distribution.

Meaning of Two sample z-test & Two sample z-test Definition