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One year Roger 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 3.02. Also, Nina had the lowest ERA of any female pitcher at the school with an ERA of 2.84. For the males, the mean ERA was 4.549 and the standard deviation was 0.978. For the females, the mean ERA was 4.092 and the standard deviation was 0.923. Find their respective z-scores. Which player had the better year relative to their peers, Roger or Nina? (Note: In general, the lower the ERA, the better the pitcher.) Roger had an ERA with a z-score of Nina 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? O A. Nina had a better year because of a higher z-score. O B. Nina had a better year because of a lower z-score. O C. Roger had a better year because of a higher z-score. O D. Roger had a better year because of a lower z-score.
Brief description of the study sample - Description of the data gathering methods for your variables of interest
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annual per capita consumption of milk is 21.6 gallons statistical abstract of the united states 2006 being from the
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