Question

QUESTION 24 A doctor is testing a new drug for treatment of high cholesterol. She uses only male subjects age 44-47 who are in the normal weight range who have no other health problems other than high cholesterol. She gives 50 subjects the new drug and 50 others a fake drug (placebo). Which best describes this experiment.?

1. A controlled, double blind study with independent variable only 2. The placebo is the dependent variable and the drug is the independent variable 3. The drug is the dependent variable and cholesterol lelvel is the independent variable 4. A controlled study where cholesterol level is the dependent variable and the drug is the independent variable

Answer 1

Based on provided data,

Experiment parameter : Level of Cholesterol (lowering high level of Cholesterol )

Experiment on.              : Administration of new drug in 100 males aged between 44 to 47, with

                                           normal weight and no other comorbidities.

New drug administered in – 50 subjects.

Fake drug administered     -- 50 subjects.

Best description for experiment,

Answer : 4. A controlled study where cholesterol levels is dependent variable and the drug is Independent variable.

Explanation:

In Research elements , variables is either result of some force or itself the force that causes changes in another variable, these can be called as Dependent and Independent variables.

*Investigator manipulates----- INDEPENDENT VARIABLE

*Participant’s response depend on manipulation ----- DEPENDENT VARIABLE

Therefore here,

Dependent variable is cholesterol level.

Independent variable is drug

NOTE : PLACEBO is substance with no known medical effect like sugar pill, sterile water etc. And PLACEBO EFFECT is phenomenon in which some people experience a benefit after administration of inactive substance.