A Researcher Examined the Effect of Lighting on Learning

question 1

Multiple Choice

A researcher examined the effect of lighting on learning.Randomly assigned participants learned material while using a 100-watt or a 125-watt bulb.There were no differences between the two groups.The nonsignificant results may have occurred because of

• A) a costly measure of learning.
• B) insufficient strength of the manipulation.
• C) selection differences.
• D) random assignment of participants.

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Definitions:

Equilibrium Price

The price at which the quantity of goods supplied equals the quantity of goods demanded in a market.

Purely Competitive Industry

A purely competitive industry is characterized by many buyers and sellers, homogenous products, and free entry and exit from the market, ensuring no single entity can control the market price.

Units of Output

Quantities of product or service produced by a company, which can be measured to assess productivity or performance.

Quantity Supplied

The amount of a product that producers are willing and able to sell at a given price over a specified period of time.