Discrete Probability Distribution Help Professor Sanchez has

Discrete Probability Distribution Help

Professor Sanchez has been teaching Principles of Economics for over 25 years. He uses the following scale for grading. Numerical b. Convert the above probability distribution to a cumulative probability distribution. (Round your answers to 3 decimal places.) c. What is the probability of earning at least a B in Professor Sanchez?s course? (Round your answer to 3 decimal places.) Probability d. What is the probability of passing Professor Sanchez?s course? (Round your answer to 3 decimal places.) Probability

Solution

(b)

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(c) the probability is 0.41

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(d) the probability is 0.915

Grade	P(X<=x)
F	1
D	0.915
C	0.81
B	0.41
A	0.14