In the Past, the Mean Running Time for a Certain

question 18

Multiple Choice

In the past, the mean running time for a certain type of flashlight battery has been 8.5 hours.The manufacturer has introduced a change in the production method and wants to perform a hypothesis test to determine whether the mean running time has changed as a result.This test is:

• A)Upper-tailed
• B)Lower-tailed
• C)Two-sided

---

Definitions:

American Federation Of Labor

A national federation of labor unions in the United States founded in 1886, focused on advocating for the rights of skilled workers.

Frederick Taylor

An American mechanical engineer and management consultant who is considered the father of scientific management, focusing on improving industrial efficiency.

Working Conditions

The surroundings or environment in which an individual performs their job, including aspects like safety, hours, and physical demands.

Electric-Powered Streetcars

Urban public transportation vehicles that run on electricity, significant in the development of efficient mass transit systems in the 19th and early 20th centuries.