Question: The distribution of grades in a large statistics course is as follows.
|
Outcome: Grade
|
Outcome: Numerical Value for the Grade
|
Probability
|
|
A
|
4.0
|
.3
|
|
B
|
3.0
|
.3
|
|
C
|
2.0
|
.2
|
|
D
|
1.0
|
.1
|
|
F
|
0.0
|
.1
|
|
Total
|
|
1.0
|
a. Set up the calculation for the expected grade in terms of numerical value for the grade.
b. What does the quantity in a above represent? Explain.