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=ax+b a=-0.871...

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=ax+b

a=-0.871

b=30.607

r²=0.514089

r=-0.717



Use this to predict the number of situps a person who watches 2.5 hours of TV can do (to one decimal place)