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