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Suppose that A and B are two events with probabilities P(A)=21,P(B)=31, then, which of the following is true?
Correct Answer: 61≤P(A∩B)≤31
Explanation
Maximum Value:
P(A∩B)≤min(P(A),P(B))
P(A∩B)≤min(21,31)
P(A∩B)≤31
Minimum Value (Standard Reference):
For independent events:
P(A∩B)=P(A)⋅P(B)
P(A∩B)=21⋅31=61
Range:
61≤P(A∩B)≤31
Correct Option: (c)
Explanation
Maximum Value:
P(A∩B)≤min(P(A),P(B))
P(A∩B)≤min(21,31)
P(A∩B)≤31
Minimum Value (Standard Reference):
For independent events:
P(A∩B)=P(A)⋅P(B)
P(A∩B)=21⋅31=61
Range:
61≤P(A∩B)≤31
Correct Option: (c)