The graph illustrates the distribution of test scores taken by College Algebra students. The maximum possible score on the test was 130, while the mean score was 80 and the standard deviation was 10. 50 60 70 80 90 100 110 Distribution of Test Scores What is the approximate percentage of students who scored between 70 and 80? 34 What is the approximate percentage of students who scored between 60 and 100 on the test? 95 What is the approximate percentage of students who scored between 80 and 110 on the test? 49.85 What is the approximate percentage of students who scored higher than 100 on the test?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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I ended up with 2.28 and 3.85 and they are both wrong how do I correctly solve this problem?

The graph illustrates the distribution of test scores taken by College Algebra students. The maximum
possible score on the test was 130, while the mean score was 80 and the standard deviation was 10.
50
60
70
80
90
100
110
Distribution of Test Scores
What is the approximate percentage of students who scored between 70 and 80?
34
What is the approximate percentage of students who scored between 60 and 100 on the test?
95
What is the approximate percentage of students who scored between 80 and 110 on the test?
49.85
What is the approximate percentage of students who scored higher than 100 on the test?
Transcribed Image Text:The graph illustrates the distribution of test scores taken by College Algebra students. The maximum possible score on the test was 130, while the mean score was 80 and the standard deviation was 10. 50 60 70 80 90 100 110 Distribution of Test Scores What is the approximate percentage of students who scored between 70 and 80? 34 What is the approximate percentage of students who scored between 60 and 100 on the test? 95 What is the approximate percentage of students who scored between 80 and 110 on the test? 49.85 What is the approximate percentage of students who scored higher than 100 on the test?
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