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=-0.978
b=27.735
r²=0.737881
r=-0.859
Use this to predict the number of situps a person who watches 12 hours of TV can do (to one decimal
place)