Question
Choose the one alternative that best completes the statement or answers the question. Provide an appropriate response. Which of the following statements regarding the equal-standard-deviations assumption of the pooled t-test is the most accurate? A) The pooled t-test is robust to moderate violations of the assumption regardless of the sample sizes. B) The pooled t-test is extremely nonrobust to violations of the assumption. C) The pooled t-test is robust to moderate violations of the assumption provided the sample sizes are large. D) The pooled t-test is robust to moderate violations of the assumption provided the sample sizes are roughly equal.
Explanation / Answer
The correct answer is D. The test id moderate to robust provided the sample sizes are roguhly equal