Students in Statistics Classes Were Asked Whether They Preferred a 10-Minute

question 55

Multiple Choice

Students in statistics classes were asked whether they preferred a 10-minute break or to allow them go out of class 10 minutes early. In a sample of 150 students, 40 preferred a 10-minute break, 80 preferred going out 10 minutes early, and 30 had no preference. We want to determine if there is a difference in students' preferences. To test the null hypothesis, the appropriate probability distribution to use is

• A) normal.
• B) chi-square.
• C) t distribution.
• D) binomial.

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Definitions:

Diminishing Returns

A principle stating that as additional amounts of a variable input are added to a fixed input, beyond some point the marginal product of the variable input begins to decrease.

Unit of Labor

A measure of labor input, often represented by one worker or one hour of work, used to calculate productivity or costs.

Marginal Cost

The price of fabricating another unit of a good or service.

Total Cost

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