Use this to predict the number of sit-ups a person who watches 8 hours of TV can do in a minute. Round to the nearest whole number.

Question

A regression was run to determine if there is a relationship between hours of TV watched per day, , and the number of sit-ups, , a person can do in a minute. The results of the regression were:

y=ax+b

a=-0.904

b=27.374

Use this to predict the number of sit-ups a person who watches  hours of TV can do in a minute. Round to the nearest whole number.

Answer 1

y=-.904(8)+ 27.374

=27.374 - 7.232

= 20.142

= 20 sit-ups

rounded to nearest integer for 8 hours TV watching