Travelocity Would Like to Test If the Standard Deviation for Roundtrip

question 6

Multiple Choice

Travelocity would like to test if the standard deviation for roundtrip airfares between New York and London is less than $200. A random sample of 22 roundtrip airfares between New York and London had a standard deviation of $142. The degrees of freedom for this hypothesis test would be _______.

• A)20
• B)19
• C)21
• D)18

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Definitions:

Credible Source

An entity or individual recognized for providing reliable and accurate information or data.

Persuasive

Persuasive pertains to the ability to compel or influence others' thoughts, beliefs, or actions through argument, reasoning, or appeal.

High Performance Risk

The potential for loss or adverse outcomes when purchasing high-end products or services that do not meet expectations for performance.

Utilitarian Products

Goods that are primarily bought and used for their practicality and function rather than their aesthetic or luxury attributes.