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=bx+ay^=bx+a b=0.878b=-0.878 a=21.56a=21.56 R2=0.799236R2=0.799236 Use this to predict the number of situps a person who watches 9 hours of TV can do (to 3 decimal places) What is the value of the correlation coefficient (to 3 decimal places) ?