Given a coal-fueled heating system. The consumption of the coal depends on the average hourly temperature. A random sample was collected and showed in the following. temperatures (x, in Fo): 28, 28, 32.5, 39, 45.9, 57.8, 58.1, 62.5. consumption(y, in tons): 12.4, 11.7, 12.4, 10.8, 9.4, 9.5, 8.0, 7.5. Er, - 351.8, Cy, = 81.7, Cry; = 3413.11, Ex? = 16874.76. Keep four decimal places. 1.(6) Fit the data to a simple linear regression model, and calculate the least squares estimates Bo , A, 2.(3) Predict the true mean fuel consumption for average hourly temperature 40 Fo