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A humanities professor assigns letter grades on a test according to the following scheme. A: Top 11% of scores B: Scores below the top 11% and above the bottom 64% C: Scores below the top 36% and above the bottom 22% D: Scores below the top 78% and above the bottom 9% F: Bottom 9% of scores Scores on the test are normally distributed with a mean of 70.6 and a standard deviation of 9.3. Find the minimum score required for an A grade. Round your answer to the nearest whole number, if necessary.
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A humanities professor assigns letter grades on a test according to the following scheme. A: Top 11%...
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