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=-1.136 a=30.427 r=0.859329 r=-0.927 Use this to predict the number of situps a person who watches 13.5 hours of TV can do. Round to one decimal place.