Miguel Is Using His Scientific Knowledge to Examine Events in His

question 49

Multiple Choice

Miguel is using his scientific knowledge to examine events in his own life. He hypothesizes that mouthwash that "stings" does a better job preventing cavities than mouthwash that does not "sting." If he assigns 10 people to use the mouthwash that stings for 6 months and another 10 people to use the mouthwash that doesn't sting for 6 months, then he is conducting a:

• A) between-subjects study.
• B) nonexperimental study.
• C) within-subjects study.
• D) longitudinal study.

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Definitions:

Long-Run Supply Curve

A graphical representation showing the relationship between market price and quantity supplied over a long period, where all inputs can be adjusted.

Purely Competitive

A market structure characterized by many buyers and sellers, all selling identical products, with no single buyer or seller able to influence the market price.

Diminishing Marginal Returns

A principle stating that if one factor of production is increased while other factors are held constant, the additional output generated will eventually decrease, related to diminishing marginal utility but applied to production.

Short-Run Equilibrium

A condition in a market or economy where all forces are balanced, but only temporarily; prices and output may change until a long-run equilibrium is achieved.