A Manager Is Thinking of Providing, on a Regular Basis

question 36

Essay

A manager is thinking of providing, on a regular basis, in-house training for employees preparing for an inventory management certification exam. In the past, some employees received the in-house training before taking the exam, while others did not. Independent random samples taken from the company's records provided the following exam scores for 10 workers who did not receive in-house training and 8 workers who did receive training. (The manager is confident that the distributions of both populations' exam scores are approximately normal.)

a. Develop a 95% confidence interval estimate for the difference between the average test scores for the two populations of employees.
b. Using a = .05, test for any difference between the average test scores for the two populations of employees.

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Definitions:

Dysfunction

Impaired or abnormal functioning of an organ, system, or process in the body.

Creatine Kinase

An enzyme that plays a crucial role in energy production within cells, particularly in muscle cells during high-intensity activities.

Muscle Damage

Harm or injury to muscle fibers, often resulting from physical activities, accidents, or medical conditions, which can lead to pain, swelling, and decreased function.

Enzyme

A complex chemical substance produced by the body, found primarily in the digestive juices, that acts upon food substances to break them down for absorption.