THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 26

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
To investigate the effectiveness of a diet,a random sample of 16 female patients is drawn from a population of adult females using the diet.The weight of each individual in the sample is taken at the start and at the end of the diet.Assume that the population of differences in weight before and after the diet follows a normal distribution.Suppose the mean decrease in weights over all 16 subjects in the study is 4.0 pounds with the standard deviation of differences computed as 6.4 pounds.Let µ_x - µ_y = mean weight before the diet - mean weight after the diet.
-In order to test if the diet is effective,what is the value of the test statistic?

• A)2.5
• B)2.0
• C)1.8
• D)1.3

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Definitions:

Consumerism

A movement, made up of citizens and government entities, that focuses on protecting consumers and promoting their interests.

Consumers

Individuals or entities that purchase goods or services for personal use and not for manufacturing or resale purposes.

Consumerism

The societal and economic order that encourages the acquisition of goods and services in ever-increasing amounts.

Government Agencies

Organizations established by a government to perform specific functions, such as regulation or enforcement of laws and policies.