SCENARIO 18-6
a Weight-Loss Clinic Wants to Use Regression Analysis $\beta$

Multiple Choice

SCENARIO 18-6
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:

Partial output from Microsoft Excel follows:
-Referring to Scenario 18-6,in terms of the $\beta$ s in the model,give the mean change in weight- loss (Y) for every 1 month increase in time in the program (X₁) when attending the afternoon session.

A) $\beta$ ₁ + $\beta$ ₄
B) $\beta$ ₁ + $\beta$ ₅
C) $\beta$ ₁
D) $\beta$ ₄ + $\beta$ ₅