The final marks for the Wednesday class in Statistics 101 are ready to be posted. The class average is 7836, with a standard deviation of 12. The distribution of grades is approximately bell-shaped. [Round the nal answers to 2 decimal places.} a. What percentage of the grades are above 102? Percentage of grades b. What percentage of the grades are below 66? Percentage of grades '36 c. What percentage ofthe grades are between 42 and 114? Percentage of grades '36 d. What percentage of the grades are between 42 and 90? Percentage of grades '36 e. What percentage ofthe grades are between 42 and 102'? Percentage of grades '36 1'. What percentage of the grades are less than 42 or more than 90? Percentage of grades '36