An english professor assigns letter grades on a test according to the following scheme. a: top 7% of scores b: scores below the top 7% and above the bottom 59% c: scores below the top 41% and above the bottom 18% d: scores below the top 82% and above the bottom 8% f: bottom 8% of scores scores on the test are normally distributed with a mean of 75.7 and a standard deviation of 8.8. find the numerical limits for a c grade. round your answers to the nearest whole number, if necessary.