Joint Probability and Mutually Exclusive Events
If the joint probability of a student choosing the ‘Longest Answer’ on an exam and also scoring between 80 and 100 on it is nonzero, can these two events be mutually exclusive?
A
They are mutually exclusive only if their probabilities sum to 1.
B
No, they are not mutually exclusive.
C
Yes, because mutually exclusive events cannot occur together.
D
Yes, they are mutually exclusive.
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