To Determine Whether Noise Affects the Ability to Solve Math

question 16

Multiple Choice

To determine whether noise affects the ability to solve math problems, a researcher has one group solve math problems in a quiet room and another group solve math problems in a noisy room. The group solving problems in the noisy room completes 15 problems in one hour and the group solving problems in the quiet room completes 22 problems in one hour. In this experiment, the independent variable is ____________ and the dependent variable is _____________.

• A) The number of problems solved; the difficulty of the problems
• B) The number of problems solved; the noise level in the room
• C) The noise level in the room; the number of problems solved
• D) The noise level in the room; the difficulty of the problems

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Definitions:

Short Run

A period in which at least one input, such as plant size or the number of firms in the market, is fixed and cannot be changed.

Fixed Cost

Any cost that does not depend on the firms’ level of output. These costs are incurred even if the firm is producing nothing. There are no fixed costs in the long run.

Marginal Costs

Marginal Costs involve the additional expenses incurred from the production of one extra unit of a product or service.

Total Variable Cost

the sum of all costs that vary with the level of production, such as materials and labor directly involved in manufacturing.