When Is the T Distribution Used Instead of the Z

question 48

Multiple Choice

When is the t distribution used instead of the Z distribution to test the significance of the difference between two sample means?

• A)never
• B)when sample size is very large
• C)when one sample is much larger than the other
• D)when N is small

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Definitions:

CPI

The Consumer Price Index, a measure that examines the weighted average of prices of a basket of consumer goods and services, such as transportation, food, and medical care.

GDP Deflator

A measure of the level of prices of all new, domestically produced, final goods and services in an economy.

Bureau of Labor Statistics

A federal agency in the United States dedicated to gathering and examining data on job market trends, conditions of employment, and variations in pricing.

Consumer's Budget

The total amount of income or resources available for an individual or household to allocate across various goods and services.