Average score class

Write a function that receives a dictionary where each key is a student's name and the corresponding value is a list of grades for that student. The function should return the total average grade for the entire class.
class_a = { 'Alice': [85, 92, 78], 'Bob': [70, 88, 91], 'Charlie': [95, 91, 88], 'Alex': [50, 66, 54] } class_b = { 'David': [88, 77, 92], 'Eve': [90, 85, 79], 'Frank': [65, 72, 63], 'Grace': [80, 82, 87] }
# define function "average_score" here ...
print(average_score(class_a)) # expected output: 79 print(average_score(class_b)) # expected output: 80
Python
Setting up Python environment...
Output