When I submit this code, it returns: Oops, try again. get_class_average([alice]) returned 83.8666666667 instead of 91.15 as expected.

I expected it to be the correct answer. I founded it rather odd that the sidebar said to use what seemed like a preexisting list, class, that I hadn't been asked to make before. Class also seemed to be a function, so I instead created a new list, class_list. Is that something that was overlooked, or was I supposed to put something like that into the code a while ago? Anyway, the only things I have changed about the code for Part 11 are the "def get_class_average" part at the very end at the class_list list. Please help!

```
lloyd = {
"name": "Lloyd",
"homework": [90.0, 97.0, 75.0, 92.0],
"quizzes": [88.0, 40.0, 94.0],
"tests": [75.0, 90.0]
}
alice = {
"name": "Alice",
"homework": [100.0, 92.0, 98.0, 100.0],
"quizzes": [82.0, 83.0, 91.0],
"tests": [89.0, 97.0]
}
tyler = {
"name": "Tyler",
"homework": [0.0, 87.0, 75.0, 22.0],
"quizzes": [0.0, 75.0, 78.0],
"tests": [100.0, 100.0]
}
class_list = [lloyd, tyler, alice]
# Add your function below!
def average(numbers):
total = sum(numbers)
total = float(total)
return total / len(numbers)
def get_average(student):
homework = average(student["homework"]) * 0.1
quizzes = average(student["quizzes"]) * 0.3
tests = average(student["tests"]) * 0.6
return homework + quizzes + tests
def get_letter_grade(score):
if score >= 90:
return 'A'
elif score >= 80:
return 'B'
elif score >= 70:
return 'C'
elif score >= 60:
return 'D'
else:
return 'F'
def get_class_average(students):
results = []
for student in class_list:
results.append(get_average(student))
return average(results)
```