Professor Sands Studies the Relationship Between the Number of Minutes

question 6

Multiple Choice

Professor Sands studies the relationship between the number of minutes that an adolescent spends text messaging each semester and his/her grades in school.She found a correlation of +.60.What can we conclude from this report?

• A)Text messaging results in lower grades for adolescents.
• B)Text messaging has no effect on grades for adolescents.
• C)Text messaging and academic grades are related in adolescents.
• D)The more an adolescent text messages,the higher his or her grades.

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Definitions:

Monopolist

A market participant that is the sole seller of a good or service, thereby controlling its market.

Income

The money received by an individual or entity, typically in exchange for labor or investment.

Total Cost Function

A mathematical formula that describes the total cost incurred by a firm in the production of goods or services as a function of output level.

Price-Discriminating Monopolist

A monopolist that charges different prices to different consumers or groups of consumers for the same product, to maximize profits.