The distribution of grades in a large statistics course is as follows. Outcome: Grade Outcome:

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.

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