A Regression Analysis Between Sales (In $1000) and Advertising (In $\hat { y }$

question 72

Multiple Choice

A regression analysis between sales (in $1000) and advertising (in $) yielded the least squares line $\hat { y }$ = 80 000 + 5x. This implies that an:

• A)increase of $1 in advertising is expected to result in an increase of $5 in sales.
• B)increase $5 in advertising is expected to result in an increase of $5000 in sales.
• C)increase of $1 in advertising is expected to result in an increase of $80 005 in sales.
• D)increase of $1 in advertising is expected to result in an increase of $5000 in sales.

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Definitions:

Sugars

Carbohydrates that are sweet to taste, soluble in water, and used as a source of energy by living organisms.

Hundreds-Thousands

A numerical range indicating quantities or counts from 100 to 999, often used to describe approximate figures.

Carbohydrate

Organic compounds consisting of carbon, hydrogen, and oxygen, serving as a major energy source in the diet of animals and humans.

Polymer

Long molecules made up of repeating units called monomers, found in numerous natural and synthetic materials.