An Investigation of the Effectiveness of a Training Program to Improve

An investigation of the effectiveness of a training program to improve customer relationships
Included a pre-training and post-training customer survey. To compare the differences, they
Computed (post-training survey score - pre-training survey score) . Seven customers were randomly
Selected and completed both surveys. The results follow:
This analysis is an example of _____________.

A) a one-sample test of means
B) a two-sample test of means
C) a paired t-test
D) a test of proportions