The following table lists the joint probabilities of achieving grades of A and not achieving As in

The following table lists the joint probabilities of achieving grades of A and not achieving A’s in two MBA courses.

a. What is the probability that a student achieves a grade of A in marketing?
b. What is the probability that a student achieves a grade of A in marketing, given that he or she does not achieve a grade of A in statistics?
c. Are achieving grades of A in marketing and statistics independent events?Explain.

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Does Not Achieve a Achieve a Grade ofA Grade of A in Marketing in Marketing Achieve a grade of A 130 in statistics Does not achieve a 053 grade of A in statistics 237 580