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.

Question

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.

Quizplus · Accepted Answer

The Answer of 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) X 1 = Length of time in weight-loss program (in months) X 2 = 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 = β 0 + β 1 X 1 + β 2 X 2 + β 3 X 1 X 2 + 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

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