TABLE 17-6 A Weight-Loss Clinic Wants to Use Regression Analysis to Build

question 101

Multiple Choice

TABLE 17-6
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
X₃ = 1 if afternoon session,0 if not (Base level = evening session)
Data for 12 clients on a weight-loss program at the clinic were collected and used to fit the interaction model:
Y = β₀ + β₁X₁ + β₂X₂ + β₃X₃ + β₄X₁X₂ + β₅X₁X₃ + ε
Partial output from Microsoft Excel follows:
Regression Statistics ANOVA
F = 5.41118 Significance F = 0.040201
-Referring to Table 17-6,what is the experimental unit for this analysis?

• A)a clinic
• B)a client on a weight-loss program
• C)a month
• D)a morning,afternoon,or evening session

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Definitions:

Photosynthesis

The biological process used by plants and some other organisms to convert light energy into chemical energy stored in glucose or other organic compounds.

Thylakoid Compartment

A structure within chloroplasts where light-dependent reactions of photosynthesis occur.

Hydrogen Ions

Protons or atoms of hydrogen that have lost their electron, thus carrying a positive electric charge.

ATP Molecules

Adenosine triphosphate molecules, which are the primary energy carrier in all living organisms, providing energy for cellular processes.