If the population standard deviation is not known, which statistical test should be used?
A) the z test
B) the t test
C) the standard deviation test
D) the variance test

Question

Quizplus · Accepted Answer

When the population standard deviation is not known, the t test should be used instead of the z test. The t test uses the sample standard deviation to estimate the population standard deviation.

If the Population Standard Deviation Is Not Known, Which Statistical