1) Scores for a mathematics competition for a large population of students are normally distributed with mean 9.44 and standard deviation 1.75. a Approximately what percentage of the scores are between 7.69 and 11.19?

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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1) Scores for a mathematics competition for a large population of students are normally distributed
with mean 9.44 and standard deviation = 1.75.
a. Approximately what percentage of the scores are between 7.69 and 11.19?
b. Certificates are given to students who score in the top 2.5% of those who took the test. Fred, a
student who took the test, finds out that he earned a score of 13.1. He wonders if he should
have received a certificate in the mail by now. Should Fred have received a certificate? How do
you know?
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Transcribed Image Text:RESET 1) Scores for a mathematics competition for a large population of students are normally distributed with mean 9.44 and standard deviation = 1.75. a. Approximately what percentage of the scores are between 7.69 and 11.19? b. Certificates are given to students who score in the top 2.5% of those who took the test. Fred, a student who took the test, finds out that he earned a score of 13.1. He wonders if he should have received a certificate in the mail by now. Should Fred have received a certificate? How do you know? Cancel Done
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