Sue fits a wls regression with all weights equal to 2. Joe fits a wls regression to the same data with all weights equal to 1. What are the differences in estimates of coefficients, standard errors, σ...

Sue fits a wls regression with all weights equal to 2. Joe fits a wls regression to the same data with all weights equal to 1. What are the differences in estimates of coefficients, standard errors, σ², F-tests between Sue’s and Joe’s analyses?

(Data file: physics1) The data file physics1 gives the results of the experiment described in except in this case, the input is the π− meson as before, but the output is the π+ meson. Analyze these data following the analysis done in the text, and summarize your results.