Create a .m file (script file) that will determine the number of students who received exam averages within each grade band (A, B,C, D,F). Using the examgrades. mat dataset embedded within MATLAB complete the following: (1) Three student exam grades were entered incorrectly, fix them: a. Replace student 45 exam 2 with a 65 b. Replace student 89 exam 4 with a 91 c. Replace student 111 exam 5 with a 98 (2) Students 100 and 117 dropped the course, remove them from the records. (3) Create a new variable ExamMeanLD where in one line you calculate each stud