Question
A humanities professor assigns letter grades on a test according to the following scheme. A: Top 8% of scores B: Scores below the top 8%
A humanities professor assigns letter grades on a test according to the following scheme.
A: Top 8% of scores
B: Scores below the top 8% and above the bottom 58%
C: Scores below the top 42% and above the bottom 22%
D: Scores below the top 78% and above the bottom 7%
F: Bottom 7% of scores
Scores on the test are normally distributed with a mean of 77.1 and a standard deviation of 7.4. Find the minimum score required for an A grade. Round your answer to the nearest whole number, if necessary.
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College Algebra Graphs and Models
Authors: Marvin L. Bittinger, Judith A. Beecher, David J. Ellenbogen, Judith A. Penna
5th edition
321845404, 978-0321791009, 321791002, 978-0321783950, 321783956, 978-0321845405
