Assignment:
Professor Sanchez has been tea ching Principles of Economics for over 25 years. He uses the following scale for grading.
| Grade |
Probability |
| A |
0.1 |
| B |
0.3 |
| C |
0.4 |
| D |
0.1 |
| F |
0.1 |
a. Use A = 4, B = 3, C = 2, D = 1, and F = O to depict the above probability distribution graphically. Comment on whether or not the probability distribution is symmetric.
b. Convert the above probability distribution to a cumulative probability representation.
c. What is the probability of earning at least a B in Professor Sanchez's course?
d. What is the probability of passing Professor Sanchez's course?