The Director of a Training Program Wanted to Know If $\chi ^ { 2 }$

Multiple Choice

The director of a training program wanted to know if a one week orientation would change the perception of potential clients who would perceive the program as being good. He collected
Information on the number of clients who would rate the program as being good before and after
The orientation. Which of the following tests will be the most appropriate?

A) $\chi ^ { 2 }$ test for proportions.
B) McNemar test.
C) Wilcoxon rank sum test.
D) Tukey-Kramer procedure.