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

question 38

Multiple Choice

A regression analysis between sales (y in $1000) and advertising (x in dollars) resulted in the following equation: $\hat { y }$ = 50,000 + 6x ?
The above equation implies that an increase of _____.

• A) $6 in advertising is associated with an increase of $6,000 in sales
• B) $1 in advertising is associated with an increase of $6 in sales
• C) $1 in advertising is associated with an increase of $56,000 in sales
• D) $1 in advertising is associated with an increase of $6,000 in sales

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Definitions:

Neurotransmitters

Chemical messengers in the nervous system that transmit signals across the synapse from one neuron to another.

Reuptake

The process by which neurotransmitters are absorbed back into the nerve cell that released them, effectively stopping their action in the synapse.

Neurotransmission

The process by which signals or messages are transmitted through the nervous system by neurons, using chemical substances known as neurotransmitters.

Graded Potential

A shift in the electrical charge across a neuron's membrane, varying in magnitude and not following the all-or-nothing principle.