TABLE 14-11 A Weight-Loss Clinic Wants to Use Regression Analysis to Build

question 81

Multiple Choice

TABLE 14-11
A weight-loss clinic wants to use regression analysis to build a model for weight loss of a client (measured in pounds) .Two variables thought to affect weight loss are client's length of time on the weight-loss program and time of session.These variables are described below:
Y = Weight loss (in pounds)
X₁ = Length of time in weight-loss program (in months)
X₂ = 1 if morning session,0 if not
Data for 25 clients on a weight-loss program at the clinic were collected and used to fit the interaction model:
Y = β₀ + β₁X₁ + β₂X₂ + β₃X₁X₂ + ε
Output from Microsoft Excel follows:
-Referring to Table 14-11,in terms of the βs in the model,give the mean change in weight loss (Y) for every 1 month increase in time on the program (X₁) when attending the morning session.

• A)β₁
• B)β₁ + β₂
• C)β₁ + β₃
• D)β₂ + β₃

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Definitions:

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A financial instrument that contains a written promise to pay a specified sum of money to another party at a determined future date or on demand.

Interest Revenue

Income earned from investments, such as savings accounts, bonds, or loans, calculated as a percentage of the principal sum.

Maturity Date

The specified date on which the principal amount of a financial instrument, such as a bond or loan, becomes due and payable.

Promissory Note

An economic vehicle that holds a firm promise made by one individual to another, obligating the former to deliver a certain amount of money, either when asked or at a future time that has been set in advance.