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=-6.969 b=37. 899 12=0.806404 r=-0.898 Use this to predict the number of situps a person who watches 2.5 hours of TV can do (to one decimal place)