Modify the code from HW 12-Part 2 to do the following:

• The program should load grades data from the provided file ('gradesdata.txt').
• Determine:
• Numeric mean (class average)
• Average letter grade for the class
• Standard deviation of the grades
• Highest numeric grade
• Lowest numeric grade
• The percentage of the grades that are more than 1 standard deviation from the mean.
• Use fprintf to output the results to a file named 'LastName_gradesresults.txt'
• There should be no output in the command window
• Note: When outputting to a txt file, you may want to open the file with permission ' '. Submission: Submit one .m file:
• Your code should be commented, code properly suppressed, and output should NOT be sent to the command window when the file is run.