print ("Confidence Interval for Average Relative Skill in the years 2013 to 2015") print (" # Mean relative skill of all teams from the years 2013-2015 mean = your_years_leagues_df ['elo_n' ] . mean( ) # Standard deviation of the relative skill of all teams from the years 2013- 2015 stdev = your_years_leagues_df ['elo_n' ] . std( ) n = len(your_years_leagues_df ) #Confidence interval # TODO: make your edits here - - - - stderr = stdev/(n ** 0.5) conf_int_95 = st . norm. interval(0.95, mean, stderr) print("95% confidence interval (unrounded) for Average Relative Skill (ELO) in the years 2013 to 2015 =", conf_int_95) print ("95% confidence interval (rounded) for Average Relative Skill (ELO) in the years 2013 to 2015 = (", round(conf_int_95[0], 2), ", ", round (conf_int_95 [1], 2), ")") print ("\\") print ( "Probability a team has Average Relative Skill LESS than the Average Relative Skill (ELO) of your team in the years 2013 to 2015") print ("