I am stuck on Part of a Whole.

I keep getting the error message: "get_class_average([alice]) returned 83.8666666667 instead of 91.15 as expected "

I expect to get the message: "Congratulations, you finished this course."

```
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]
}
# Add your function below!
def average(n):
total = sum(n)
aver = float(total) / len(n)
return aver
def get_average(student):
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
wh = homework * 0.10
wq = quizzes * 0.30
wt = tests * 0.60
sum = wh + wq + wt
return sum
def get_letter_grade(score):
if score >= 90:
return "A"
elif score >= 80 and score < 90:
return "B"
elif score >= 70 and score < 80:
return "C"
elif score >= 60 and score < 70:
return "D"
else:
return "F"
result = get_average(lloyd)
get_letter_grade(result)
def get_class_average(s):
results = []
for student in students:
results.append(get_average(student))
return average(results)
```