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teacher informs her invertebrate physiology class (of 500+ students) that a test was very difficult, but the grades would be curved. Scores on the test were normally distributed with a mean of 50 and a standard deviation of 3.9. The maximum possible score on the test was 100 points. Because of partial credit, scores were recorded with 1 decimal point accuracy. (Thus, a student could earn a 50.2, but not a 49.06.) The grades are curved according to the following scheme.

teacher informs her invertebrate physiology class (of 500+ students) that a test was very difficult, but the grades would be curved. Scores on the test were normally distributed with a mean of 50 and a standard deviation of 3.9. The maximum possible score on the test was 100 points. Because of partial credit, scores were recorded with 1 decimal point accuracy. (Thus, a student could earn a 50.2, but not a 49.06.) The grades are curved according to the following scheme.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A teacher informs her invertebrate physiology class (of 500+ students) that a test was very difficult, but the grades would be curved. Scores on the test were normally distributed with a mean of 50 and a standard deviation of 8.9. The maximum possible score on the test was 100 points. Because of partial credit, scores were recorded with 1 decimal point accuracy. (Thus, a student could earn a 50.2, but not a 49.06.) The grades are curved according to the following scheme. Find the numerical limits for each letter grade. Letter Scheme Interval A B C D F Top 14% Scores above the bottom 75% and below the top 14% Scores above the bottom 25% and below the top 25% Scores above the bottom 14% and below the top 75% Bottom 14%
Transcribed Image Text:A teacher informs her invertebrate physiology class (of 500+ students) that a test was very difficult, but the grades would be curved. Scores on the test were normally distributed with a mean of 50 and a standard deviation of 8.9. The maximum possible score on the test was 100 points. Because of partial credit, scores were recorded with 1 decimal point accuracy. (Thus, a student could earn a 50.2, but not a 49.06.) The grades are curved according to the following scheme. Find the numerical limits for each letter grade. Letter Scheme Interval A B C D F Top 14% Scores above the bottom 75% and below the top 14% Scores above the bottom 25% and below the top 25% Scores above the bottom 14% and below the top 75% Bottom 14%
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