A researcher draws a random sample of 500 participants for a study with the intent to perform a dependent t test for a directional hypothesis. He reviews the normality indices and finds slight non-normality. What is the most appropriate recommendation for the researcher?
A) Abort and find a different procedure. The t test is not robust to violations of normality.
B) Proceed with the t test. The t test is robust to violations of normality.
C) Suggest a different sample be selected and start over.

Question

Quizplus · Accepted Answer

The t test is known to be robust to violations of normality, especially with large sample sizes such as 500 participants. In this case, slight non-normality is unlikely to significantly affect the results, making it appropriate to proceed with the t test.

A Researcher Draws a Random Sample of 500 Participants for a Study