One year Chris had the lowest ERA earned run average mean

Last updated: 12/9/2023

One year Chris had the lowest ERA earned run average mean number of runs yielded per nine innings pitched of any male pitcher at his school with an ERA of 3 26 Also Karla had the lowest ERA of any female pitcher at the school with an ERA of 3 47 For the males the mean ERA was 4 513 and the standard deviation was 0 788 For the females the mean ERA was 4 588 and the standard deviation was 0 785 Find their respective z scores Which player had the better year relative to their peers Chris or Karla Note In general the lower the ERA the better the pitcher Chris had an ERA with a z score of Karla had an ERA with a z score of Round to two decimal places as needed Which player had a better year in comparison with their peers OA Chris had a better year because of a higher z score OB Karla had a better year because of a higher z score OC Chris had a better year because of a lower z score OD Karla had a better year because of a lower z score