A parametric inferential statistical test of the null hypothesis for a single sample where the population variance is known is the
A)t test.
B)standard deviation.
C)z test.
D)standard error test.

Question

Quizplus · Accepted Answer

A z test is used when the population variance is known and we want to test the null hypothesis for a single sample. The t test is used when the population variance is unknown and must be estimated from the sample. The standard deviation and standard error are measures of variability and not inferential statistical tests.

A Parametric Inferential Statistical Test of the Null Hypothesis for a Single