In a study of pollution in a water stream, the concentration of pollution is mea- sured at 5 different locations. The locations are at different distances to the pollution source. In the table below, these distances and the average pollution are given: Distance to the pollution source (in km) Average concentration 2 4 6 8 10 11.5 10.2 10.3 9.68 9.32 a) What are the parameter estimates for the three unknown parameters in the usual linear regression model: 1) The intercept (Bo), 2) the slope (81) and 3) error standard deviation (o)