- CFA Exams
- CFA Level I Exam
- Study Session 3. Quantitative Methods (2)
- Reading 11. Hypothesis Testing
- Subject 8. Hypothesis Tests Concerning the Mean: T-Test vs. Z-Test

###
**CFA Practice Question**

Consider the following statements about t- and z-tests:

II. As sample size increases, a t-graph begins to resemble a z-graph.

III. For infinity degrees of freedom, the critical values for a z-distribution can also be found on a t-table in the row that has infinity as its degrees of freedom.

I. The degrees of freedom in a t-distribution depend on sample size, and generally the degrees of freedom are defined as n-1.

II. As sample size increases, a t-graph begins to resemble a z-graph.

III. For infinity degrees of freedom, the critical values for a z-distribution can also be found on a t-table in the row that has infinity as its degrees of freedom.

Which statement(s) is (are) TRUE?

A. I and II

B. I and III

C. I, II and III

###
**User Contributed Comments**
0

You need to log in first to add your comment.