A Large Department Store Examined a Sample of the 18

question 15

Multiple Choice

A large department store examined a sample of the 18 credit card sales and recorded the amounts charged for each of three types of credit cards: MasterCard, Visa, and Discover. Six MasterCard sales, seven Visa, and five Discover sales were recorded. The store used an ANOVA to test if the mean sales for each credit card were equal. What are the degrees of freedom for the F statistic?

• A) 18 in the numerator, 3 in the denominator
• B) 3 in the numerator, 18 in the denominator
• C) 2 in the numerator, 15 in the denominator
• D) 6 in the numerator, 15 in the denominator

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Definitions:

Cognitive Maps

Mental representations of physical locations, allowing an individual to visualize paths or navigate spaces they have experienced.

Algorithms

Step-by-step procedures or formulas for solving problems or completing tasks, often used in computing and mathematical problem-solving.

Base-Rate Information

Statistical information about the general frequency of an event or characteristic within a relevant population.

Availability Heuristic

A quick mental approach that depends on the first examples that are thought of when assessing a particular subject, idea, technique, or choice.