A study of the potential of acrylonitrile to produce brain tumors in rats was conducted by administering the carcinogen in drinking water for twenty-four months. The results of the study for female rats are tabulated below. a) Determine the slope factor (SF) of the dose-response relationship (assume it's linear). (Don't forget to account for the one rat that had a brain tumor even though it wasn't exposed to the chemical). b) How accurate is the linear model of the data