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Mathematics, 02.08.2019 20:40 abbyg2710

An english professor assigns letter grades on a test according to the following scheme. a: top 15% of scores b: scores below the top 15% and above the bottom 55% c: scores below the top 45% and above the bottom 19% d: scores below the top 81% and above the bottom 6% f: bottom 6% of scores scores on the test are normally distributed with a mean of 74.2 and a standard deviation of 9.6. find the numerical limits for a d grade. round your answers to the nearest whole number, if necessar

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