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One year Chris had the lowest ERA earned run average mean number of runs yielded...

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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

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