A humanities professor assigns letter grades on a test according to the following scheme. A: Top 12% of scores B: Scores below the top 12% and above the bottom 64% C: Scores below the top 36% and above the bottom 23% D: Scores below the top 77% and above the bottom 8% F: Bottom 8% of scores Scores on the test are normally distributed with a mean of 65.7 and a standard deviation of 8.9. Find the minimum score required for an A grade. Round your answer to the nearest whole number, if necessary
A humanities professor assigns letter grades on a test according to the following scheme. A: Top 12% of scores B: Scores below the top 12% and above the bottom 64% C: Scores below the top 36% and above the bottom 23% D: Scores below the top 77% and above the bottom 8% F: Bottom 8% of scores Scores on the test are normally distributed with a mean of 65.7 and a standard deviation of 8.9. Find the minimum score required for an A grade. Round your answer to the nearest whole number, if necessary
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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A humanities professor assigns letter grades on a test according to the following scheme.
A: Top 12% of scores
B: Scores below the top 12% and above the bottom 64%
C: Scores below the top 36% and above the bottom 23%
D: Scores below the top 77% and above the bottom 8%
F: Bottom 8% of scores
Scores on the test are
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