An investigation of the effectiveness of a training program to improve customer relationships included a pre-training and post-training customer survey. 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.

Question

An investigation of the effectiveness of a training program to improve customer relationships included a pre-training and post-training customer survey. 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.

Quizplus · Accepted Answer

This analysis is a comparison of the same customers before and after the training program, making it a paired t-test.

An Investigation of the Effectiveness of a Training Program to Improve