Question

When laboratory rats are exposed to asbestos fibers, some of them develop lung tumors. the table lists the results of several experiments by different scientists. asbestos exposure (fibers/ml) percent of mice that develop lung tumors asbestos exposure (fibers/ml) percent of mice that develop lung tumors 50 1 1600 41 400 5 1800 38 500 6 2000 37 900 9 3000 49 1100 25 (a) find the regression line for the data. (use x for asbestos exposure in fibers/ml and y for percent of mice with tumors. round your values to four decimal places.)?

Answer 1

First step  build the table (see attached table)
 using a calculator we find the regression line

Number of values=9

Regression line equation

Y=a+bx

y-intersection a= - 0.1697

slope b=0.0187

y=-0.1697+0.0187X