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Suppose there is an event A and the probability of A happening is Pr(A). Then the complementary event is that A does not happen or that "not-A" happens: this is often denoted by A'.

Then Pr(A') = 1 - Pr(A).

Suppose there is an event A and the probability of A happening is Pr(A). Then the complementary event is that A does not happen or that "not-A" happens: this is often denoted by A'.

Then Pr(A') = 1 - Pr(A).

Suppose there is an event A and the probability of A happening is Pr(A). Then the complementary event is that A does not happen or that "not-A" happens: this is often denoted by A'.

Then Pr(A') = 1 - Pr(A).

Suppose there is an event A and the probability of A happening is Pr(A). Then the complementary event is that A does not happen or that "not-A" happens: this is often denoted by A'.

Then Pr(A') = 1 - Pr(A).

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9y ago

Suppose there is an event A and the probability of A happening is Pr(A). Then the complementary event is that A does not happen or that "not-A" happens: this is often denoted by A'.

Then Pr(A') = 1 - Pr(A).

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Q: What is the describing of the complementary event and find its probability?
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