Use the Following to Answer the Question(s) Below

question 25

Multiple Choice

Use the following to answer the question(s) below.
A newly developed drug is tested to determine absorption levels in a patient's bloodstream. A patient is injected with the drug and the concentration (units/cc) in the patient's blood is measured every hour for seven hours. Below is the output from fitting a linear regression model.
-Which of the following is true?

• A) The linear model is absolutely perfect for estimation of the concentration level after 10 hours. The scatterplot shows no bend.
• B) This model will probably underestimate the concentration level after 10 hours. The scatterplot shows some bend and suggests that the linear model is not appropriate.
• C) This model will definitely overestimate the concentration level after 10 hours, as the scatterplot shows two extreme outliers.
• D) The linear model is appropriate for estimation of the concentration level after 10 hours. It explains 89.21% of the variability in blood concentration levels of the drug.
• E) The linear model is not appropriate because it explains only 4.72% of the variability in blood concentration levels of the drug.

---

Definitions:

Love

A complex set of emotions, behaviors, and beliefs associated with strong feelings of affection, protectiveness, warmth, and respect for another person.

Marriage

A legally and socially sanctioned union between individuals that establishes rights and obligations between them.

Money

A medium of exchange in the form of coins and banknotes; used to purchase goods and services or measure value.

Need for Achievement

A psychological drive that influences an individual to pursue and achieve goals.