answer this questions

1) Statistical bulletin reported the average hospital charge and the average length of hospital stay for patients undergoing radical prostatectomies in a sample of 12 states. The data is listed below State Average Hospital Average length Chare ($) of sta (da 5) M M __ 13.820 Texas 1 0,400 3 .52 Arizona 12.860 3 .7? a) Plot the data on a scattergram b) Use the method of least squares to mode] the relationship between average hospital charge (y) and length of hospital stay (x). c) Conduct a test of model adequacy using a = .10. d) Find the estimated standard error of the regression model. e) What fraction of the states in the sample have average hospital charges within 1 2s of the least squares line? 0 Find and interpret the values of r and r"2 for the data. (6 marks)