***PLEASE SHOW HOW TO SOLVE IN EXCEL*** NOT HANDWRITTEN
5) The letter grades on the midterm exam given in a largemanagerial statistics class are normally distributed with mean 75and standard deviation 9. The instructor of this class wants toassign an A grade to the top 10% of the scores, a B grade to thenext 10% of the scores, a C grade to the next 10% of the scores, aD grade to the next 10% of the scores and an F grade to all scoresbelow the 60th percentile of this distribution. For each possibleletter grade, find the lowest acceptable score.