An Investigation of the Effectiveness of a Training Program to Improve

question 7

Multiple Choice

An investigation of the effectiveness of a training program to improve customer relationships included a pre-training and a 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 are shown here. 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

---

Definitions:

Atherosclerosis

A disease characterized by the buildup of fats, cholesterol, and other substances in and on artery walls, which can restrict blood flow and lead to cardiovascular issues.

High Blood Pressure

A condition in which the force of the blood against the artery walls is too high, potentially leading to health problems, such as heart disease.

Elevated Cholesterol Levels

Higher than normal amounts of cholesterol in the blood, which can increase the risk of heart disease.

Traumatic Events

Incidents that involve exposure to actual or threatened death, serious injury, or sexual violence, leading potentially to lasting psychological impact.