Score: 5725 5/25 answered Question 20 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=-1.388 b=22. 015 r2=0: 698896 r=-0.836 Use this to predict the number of situps a person who watches 0.5 hours of TV can do (to one decimal place) Submit