Question In a city with three high schools, all the ninth graders took a… In a city with three high schools, all the ninth graders took a Standardized Test, with these results: High SchoolMean score on testNumber of ninth gradersGlenwood78253Central City96341Lincoln High68170 The city’s PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was 80.7 . Of course, that is incorrect.What is the mean score for all ninth graders in the city? Mean of all ninth grader’s scores = Round to 2 places Math Statistics and Probability MATH 128 Share QuestionEmailCopy link Comments (0)