Q2. Final exam marks of the students registered in Chem1202 at MRU has a normal distribution with average of 78% and standard deviation of 5.3%. a) Find the zscore of mark of a student who scored of 92%? 13) Find the mark of a students whose z-score -1.4? c) Find the zscore of mark of a student who scored of 92%? d) What percent of students scored higher than 60%? e) What percent of students scored lower than 70%? f) What percent of students scored between 55% and 75%