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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 81 261 Central City Lincoln High 93 338 67 189 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was 80.3. Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place. mean of all ninth grader's scores =

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 81 261 Central City Lincoln High 93 338 67 189 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was 80.3. Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place. mean of all ninth grader's scores =

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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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 81 261 Central City 93 338 Lincoln High 67 189 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was 80.3. Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place. mean of all ninth grader's scores =
Transcribed Image Text: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 81 261 Central City 93 338 Lincoln High 67 189 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was 80.3. Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place. mean of all ninth grader's scores =
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Given: City with three high schools, all the ninth graders took a standardized test, the result is given as:

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