DrMartinez Is Doing a Research Study Examining the Effects of a New

question 133

Multiple Choice

Dr.Martinez is doing a research study examining the effects of a new headache medication on migraine pain.He decides to divide his participants up into four subject groups,each one of which will receive a different amount of medication to take when they have a migraine.He will ask them to write down their assessment of how much the pain has dropped on a ten-point scale an hour after taking the medication.What is the independent variable in this study?

• A) The intensity of the migraine each participant has before taking the medication.
• B) The amount of medication each participant takes.
• C) The level of pain reduction reported by each participant.
• D) The number of people who are assigned to each of the subject groups.

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Definitions:

Profit

The financial gain achieved when the amount earned from a business activity exceeds the expenses, costs, and taxes needed to sustain the activity.

Marginal Revenue

The increase in income derived from the sale of one more unit of a good or service.

Total Cost

The sum of all expenses incurred in the production of goods or services, including fixed and variable costs.

Single Price Monopolist

A monopolist that charges all consumers the same price for its product, as opposed to practicing price discrimination.