Suppose Bank of America Would Like to Investigate If the Credit

question 101

Multiple Choice

Suppose Bank of America would like to investigate if the credit score and income level of an individual are independent of one another. Bank of America selected a random sample of 400 adults and asked them to report their credit score range and their income range. The following contingency table presents these results. The degrees of freedom for the critical value is ________.

• A) 3
• B) 4
• C) 5
• D) 6

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Definitions:

Exosystem

Community institutions and settings that indirectly influence the child, such as the school board and the parents’ workplaces (from the Greek exo, meaning “outside”).

Ethologists

Specialists who study animal behavior in natural environments, focusing on how animals interact with each other and their surroundings.

Evolution

The biological process by which species of organisms change over time through variation, genetic mutation, and natural selection.

Environment

The surroundings or conditions in which a person, animal, or plant lives or operates, including natural, social, and cultural factors.