When testing the difference between two population means under independent sampling, we use the z distribution if _____ the population variances are knownthe population variances are unknown, but assumed to be equalthe population variances are unknown and cannot be assumed equalBoth the population variances are known and the population variances are unknown, but assumed to be equal

The z distribution is used to compare the means of two samples to see if it is feasible that they…

Answered: the population variances are known the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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the population variances are known the population variances are unknown, but assumed to be equal the population variances are unknown and cannot be assumed equal Both the population variances are known and the population variances are unknown, but assumed to be equal