A Researcher Wants to Compare the Effect of a New

question 68

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

---

Definitions:

Hypertension

A condition characterized by persistently high blood pressure, which can lead to serious health issues like heart disease and stroke.

Leg Exercises

Physical activities focusing on strengthening and increasing the flexibility of the muscles in the legs.

Educational Methods

Various strategies and approaches used in teaching to enhance learning and understanding among students.

Preoperative

Pertaining to the period or phase before a surgical operation, involving necessary preparations and assessments to ensure patient readiness for surgery.