The expression $P(A \cup B)=P(A)+P(B)$ is valid if
A) $A$ and $B$ are independent.
B) $A$ and $B$ are mutually exclusive.
C) $A$ and $B$ are dependent.
D) none of these.

Question

Quizplus · Accepted Answer

The expression $P(A \cup B) = P(A) + P(B)$ is valid if $A$ and $B$ are mutually exclusive, meaning they cannot both happen at the same time. This ensures there is no overlap to subtract, making the formula accurate without needing to adjust for the intersection of $A$ and $B$.

The Expression P(A∪B)=P(A)+P(B)P(A \cup B)=P(A)+P(B)P(A∪B)=P(A)+P(B) Is Valid If A) AAA And BBB Are Independent

The Expression $P(A \cup B)=P(A)+P(B)$ Is Valid If
A) $A$ And $B$ Are Independent