Calculate the equation of the estimate regression line with HRT as the explanatory variable ...

     HRT use Breast cancer incidence   46.3 103.3    40.6 105    39.5 100    36.6 93.8    30 83.5              Calculate   the equation of the estimate regression line with HRT as the explanatory   variable.   What   is the estimate average change in BCI associated with a 1% increase in HRT   use?   what   would you predict the BCI to be in a yr when HRT use was 40%?   Calculate   and interpret the value of r squared.