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; the resulting multiple regression output is shown above.

Referring to the above output, give the change in weight loss (y) for every 1 month increase in Length of time on the program (x₁) when attending the morning session.

90.1981 - 5.1024

-20.7298 + 7.2472

7.2472 + 90.1981

7.2472 - 5.1024

7.2472