Which of the Following Studies Would NOT Have a Possible

question 2

Multiple Choice

Which of the following studies would NOT have a possible threat of observer bias?

• A)A study looking at the effect of eating fruits and vegetables and general physical fitness
• B)A study looking at the effect of tutoring on SAT scores
• C)A study looking at whether increasing the number of hours listening to music increases singing ability
• D)A study looking at the effect of increasing the rate of text messaging in a day on writing/English composition skill

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Definitions:

Marginal Social Cost

The extra expense borne by the entire society resulting from the manufacture of an additional unit of a product or service.

Trade Permits

Legal documents or licenses required to engage in certain types of trade or business, often used to regulate or protect industries.

Pollution Reduction

Pollution reduction refers to strategies and activities aimed at decreasing the amount of pollutants released into the environment.

Government Caps

Limits or regulations imposed by government on prices, rents, or quantities that can be charged or supplied in certain markets.