An Over-The-Counter Drug Manufacturer Wants to Examine the Effectiveness of a New

question 62

Multiple Choice

An over-the-counter drug manufacturer wants to examine the effectiveness of a new drug in curing an illness most commonly found in older patients. Thirteen patients are given the new drug and 13 patients are given the old drug. To avoid bias in the experiment, they are not told which drug is given to them. To check how the effectiveness depends on the age of patients, the following data have been collected. The variables are Effectiveness = the response variable measured on a scale from 0 to 100,
Age = the age of a patient (in years) ,
Drug = a binary variable with 1 for the new drug and 0 for the old drug.
The regression model, Effectiveness = β₀ + β₁Age + β₂Drug + β₃Age × Drug, is estimated and the following results are obtained. Which of the following is the estimated regression model?

• A) = 0.34Age - 40.86Drug + 0.70Age × Drug
• B) = 3.15 + 0.07Age - 4.08Drug + 0.09Age × Drug
• C) = 14.94 + 5.06Age - 10.02Drug + 7.94Age × Drug
• D) = 47.04 + 0.34Age - 40.86Drug + 0.70Age × Drug

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Definitions:

Adaptive Immune Response

The aspect of the immune system that learns to recognize specific pathogens and provides enhanced response upon subsequent exposures, involving B and T cells.

Phagocytic Cells

Cells that are capable of ingesting and breaking down pathogens or particles, playing a key role in the immune response.

Neutrophils

White blood cells that are a key part of the immune system, responsible for fighting infection by ingesting microorganisms and releasing enzymes.

Lymphocytes

A type of white blood cell that is part of the immune system, helping the body fight infection and disease.