- CFA Exams
- CFA Level I Exam
- Topic 1. Quantitative Methods
- Learning Module 8. Hypothesis Testing
- Subject 9. Tests Concerning Differences between Means with Dependent Samples
CFA Practice Question
Which of the following statements is not true when it comes to conducting hypothesis tests for differences between population means and mean differences (paired comparison tests)?
A. A paired comparison test must use n-1 degrees of freedom, where n equals the number of paired observations.
B. When conducting a test for the difference between the means of two populations that are independent, an assumption must be made as to whether the population variances are equal or not.
C. It is possible to conduct these types of tests even if the underlying populations are not normally distributed.
Explanation: When conducting hypothesis tests for differences between population means and mean differences (paired comparison tests), it is imperative that the underlying populations be normally distributed.
User Contributed Comments 0
You need to log in first to add your comment.