Nicholas F.

asked • 03/22/23

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 75 and the standard deviation was 12.

39 51 63 75 87 99 111


Use the "Empirical Rule", not a calculator or other technology. Do not round your answers.


What is the approximate percentage of students who scored between 75 and 87 on the test?

t%

What is the approximate percentage of students who scored less than 51 on the test?

%

What is the approximate percentage students who scored between 63 and 87 on the test?

%

What is the approximate percentage of students who scored between 51 and 99 on the test?

%

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