please ita urgent

4) An activity at Braemar International College of Spies is to see how many puzzles students can solve on a quiz. The scores of the 120 students are distributed normally. The average student scored Bio with a standard deviation of 16. a) What is the probability that a student will solve more than 82." (2 marks) b) What percent of students are graded between 60" , and $0%%" (2 marks) c) How many students can solve between "(lla and $ 's puzzles" (a marks)