Marshall isn't getting enough sleep and suspects it's due to playing too many video games before bed. To find out, he decided to track how much time he spends gaming.

Question

Over several days, Marshall recorded how many hours of sleep he had gotten each night, x, as well as how many hours he had spent playing video games before bed, y.
The least squares regression line of this data set is:
y= –2.714x + 13.297

How many hours does this line predict Marshall would sleep if he played video games for 1.8 hours before bed?
Round your answer to the nearest integer.
______ hours

Answer 1

6 hours