A large group of students took a test in Chemistry and the final grades have a mean of 65 and a standard deviation of 6. Passing mark is 40 from 100 marks. This sampling distribution can be approximate to a normal distribution. a. What is the type of this sampling distribution? Why is it classified as this type? b. What are the conditions that have been fulfilled by this sampling distribution for approximation to normal distribution? c. What is the percent of the students that will score at least 75? d. What is the percent of the students that will pass the Chemistry test? (10 markah)