Use this to predict the number of situps a person who watches 10.5 hours of TV can do.

Question

A regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a person can do (y).

The results of the regression were:

y=a+bx

b=-0.634

a=30.709

r2=0.948676

r=-0.974

Use this to predict the number of situps a person who watches 10.5 hours of TV can do.

 Round to one decimal place.

Answer 1

Since you have the regression model and the parameters a and b, you can simply plug in x = 10.5 to get y.