Question $4$

Given the cable and summary output, please answer the following questions:

intercept:

The forecasting in Year $7$ is ; Slope:

The forecasting in Year $8$ is

The forecasting in Year $9$ is

Please keep THREE decimal places.

If the digit one step to the right from the rounding digit is $0,1,2,3,$ or $4,$ round down. E$.$g$.53\mathrm{.}2543$ rounded to $53\mathrm{.}254.$