Which of the following is not one of the assumptions for a one-sample t test?
A) Independent and random selection of subjects.
B) The dependent variable is normally distributed in the population.
C) The dependent variable can be measured on an interval or ratio scale.
D) σ is known.

Question

Quizplus · Accepted Answer

One of the assumptions for a one-sample t test is that the population standard deviation (σ) is unknown and must be estimated from the sample. Therefore, D is the correct answer as it states that σ is known, which is not an assumption for a one-sample t test.

Which of the Following Is Not One of the Assumptions