The one-sample z test is a hypothesis test used to test hypotheses
A) concerning a single population with a known variance.
B) concerning at least one population.
C) concerning the variance in a population.
D) all of these.

Question

Quizplus · Accepted Answer

The one-sample z test is specifically used to test hypotheses about a single population with a known variance. It compares a sample mean to a population mean, where the population standard deviation is already known.

The One-Sample Z Test Is a Hypothesis Test Used to Test