W r i t e a program that uses the keys(), values(), and/or items() dict methods to find statistics about the student_grades dictionary. Find the following:

• Print the name and grade percentage of the student with the highest total of points.
• Find the average score of each assignment.
• Find and apply a curve to each student's total score, such that the best student has 100% of the total points.

And here is the given code. 

# student_grades contains scores (out of 100) for 5 assignments
student_grades = {
   'Andrew': [56, 79, 90, 22, 50],
   'Nisreen': [88, 62, 68, 75, 78],
   'Alan': [95, 88, 92, 85, 85],
   'Chang': [76, 88, 85, 82, 90],
   'Tricia': [99, 92, 95, 89, 99]
}