Quiz

A study was done to see the relationship between the number of clocks (x) people have in their home and the number of days (y) per year they arrive late to work.  The equation of the regression line was 

    y  =  20 - 2x

  1. Use the linear regression line to give a point estimate for the mean number of days a person who has 6 clocks in his house will be late.
     
  2. Use a complete sentence to interpret the y-intercept in the context of the question.
     
  3. Use a complete sentence to interpret the slope in the context of the question.