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:

Buildings

Physical structures owned by a company and used for its operations, representing a long-term asset on the balance sheet.

Land

A natural resource representing the earth's surface, not manufactured or created by humans, and used for various purposes including agriculture, building, and development.

Machinery and Equipment

Long-term assets used in the operations of a business, not intended for sale.

Machinery and Equipment

Assets used in the production process of goods or services, including machines, tools, and technology.