Exhibit 17

question 81

Multiple Choice

Exhibit 17.5.An over-the-counter drug manufacturer wants to examine the effectiveness of a new drug in curing an illness most commonly 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 has been collected. Assuming the variables: 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 considered,and the following Excel results are available: Refer to Exhibit 17.5.What is the predicted effectiveness of the new drug for a 62 years old patient?

• A)21.08
• B)64.48
• C)68.12
• D)70.66

---

Definitions:

Foot-In-The-Door Technique

A persuasion strategy that involves getting a person to agree to a small request as a precursor to getting them to agree to a larger request.

Defense Of Apathy

A psychological state or coping mechanism where an individual shows a lack of interest, enthusiasm, or concern towards aspects of life or a particular situation.

Contribution

Offering or providing something, such as an idea, service, or financial aid, intended to help or benefit others.

Sleeper Effect

A delayed increase in the persuasive impact of a message.