A poll conducted the day before the student-body presidential election at a midwestern university showed that 54.2 percent favored Mario. The margin of error was 4.6 percentage points. Find a confidence interval for the true percentage of all students who support Mario?     49.6% to 58.8%     49.6% to 54.2%     54.2% to 58.8%     51.9% to 56.5%

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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A poll conducted the day before the student-body presidential election at a midwestern university showed that 54.2 percent favored Mario. The margin of error was 4.6 percentage points. Find a confidence interval for the true percentage of all students who support Mario?

   

49.6% to 58.8%

   

49.6% to 54.2%

   

54.2% to 58.8%

   

51.9% to 56.5%

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