A regression was run to determine if there is a relationship between hours of TV watched per day, x, and
number of sit-ups, y, a person can do in a minute.
The results of the regression were:
y=ax+b
a=-1.224
b=27.623
Use this to predict the number of sit-ups a person who watches 5 hours of TV can do in a minute. Round to
the nearest whole number.