A Researcher Wants to Compare the Effect of a New

question 11

Multiple Choice

A researcher wants to compare the effect of a new type of shampoo on hair condition. The researcher believes that men and women may react to the shampoo differently. Additionally, the researcher believes that the shampoo will react differently on hair that is dyed. The subjects are split into four groups: men who dye their hair; men who do not dye their hair; women who dye their hair; women who do not dye their hair. Subjects in each group are randomly assigned to the new shampoo and the old shampoo. This experiment

• A) has one factor (shampoo type), blocked by gender and whether hair is dyed.
• B) is completely randomized.
• C) has two factors (gender and whether hair is dyed) blocked by shampoo type.
• D) has two factors (shampoo type and whether hair is dyed) blocked by gender.
• E) has three factors (shampoo type, gender, whether hair is dyed).

---

Definitions:

Competitive Markets

Markets characterized by numerous buyers and sellers, where competition drives innovation, quality, and fair pricing.

Pure Competition

A market structure characterized by a large number of buyers and sellers where no single entity has the power to influence market prices significantly.

Monopolistic Competition

A market structure characterized by many firms selling products that are similar but not identical, allowing for some degree of market power and product differentiation.

Diffusion of Innovation

The process by which a new idea, product, or behavior spreads through a population or social system over time.