Mark Underwood is a professor of Economics at Indiana University. He has been teaching Principles of Economics

Question:

Mark Underwood is a professor of Economics at Indiana University. He has been teaching Principles of Economics for over 25 years. Professor Underwood uses the following scale for grading.
Grade ........ Probability
A ..... 0.10
B ..... 0.30
C ..... 0.40
D ..... 0.10
F ...... 0.10

Calculate the expected numerical grade in Professor Underwood’s class using 4.0 for A, 3.0 for B, etc.