In a city with three high schools, all the ninth graders took a Standardized Test, with these results: High School Mean score on test Number of ninth graders Glenwood 82 286 Central City 94 341 Lincoln High 71 183 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was 82.3 . 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 Enter an integer or decimal number [more..] Question Help: [ Video 1 ) Video 2 Message instructor Submit