5) A large group of students took a test in Finite Math where the grades had a mean of 72 and a standard deviation of 4. Assume that the distribution of these grades is approximated by a normal distribution and that passing the test is a 65 a) What percent of students scored higher an 81 or higher? b) What percent of students failed the test? C) What percent of students scored between a 70 and 75? d) What happens when you try to find the percent of students that scored less than a 40