A psychology professor assigns letter grades on a test according to the following scheme. A: Top 14%
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A psychology professor assigns letter grades on a test according to the following scheme. A: Top 14% of scores
B: Scores below the top 14% and above the bottom 65%
C: Scores below the top 35% and above the bottom 23%
D: Scores below the top 77% and above the bottom 5%
F: Bottom 5% of scores
Scores on the test are normally distributed with a mean of 66.9 and a standard deviation of 7.9.
Find the numerical limits for a B grade. Round your answers to the nearest whole number, if necessary.
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