Regression Analysis Was Applied Between Sales Data (Y in $1000s)

question 31

Multiple Choice

Regression analysis was applied between sales data (y in $1000s) and advertising data (x in $100s) and the following information was obtained. ​ = 12 + 1.8x
​
N = 17
SSR = 225
SSE = 75
Sb₁ = .2683
​
Based on the above estimated regression equation, if advertising is $3000, then the point estimate for sales (in dollars) is

• A) $66,000.
• B) $5412.
• C) $66.
• D) $17,400.

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Definitions:

Smooth Muscle

A type of muscle found in the walls of hollow organs, such as the intestines and blood vessels, that contracts involuntarily.

Cardiac Muscle

A specialized form of striated muscle found in the heart, responsible for pumping blood throughout the body.

Central Chemoreceptors

Sensory receptors located in the central nervous system that primarily detect changes in the acidity (pH) of cerebrospinal fluid.

Medulla Oblongata

The lower portion of the brainstem, controlling vital bodily functions such as breathing, heart rate, and blood pressure.