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The probability of the complement of an event, i.e. of the event not happening, is 1 minus the probability of the event.

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Q: How do you find the probability of the complement of an event?
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What does it mean to find the compliment of the probability of an event?

The complement (not compliment) of the probability of event A is 1 minus the probability of A: that is, it is the probability of A not happening or "not-A" happening.The complement (not compliment) of the probability of event A is 1 minus the probability of A: that is, it is the probability of A not happening or "not-A" happening.The complement (not compliment) of the probability of event A is 1 minus the probability of A: that is, it is the probability of A not happening or "not-A" happening.The complement (not compliment) of the probability of event A is 1 minus the probability of A: that is, it is the probability of A not happening or "not-A" happening.


What is the relationship between the probability of a simple event and its complement?

If the probability of an event is p, then the complementary probability is 1-p.


If the probability of an event is 0.42 then what is the probability of its component?

I haven't heard of a component with regards to statistics. If, by chance, you are referring to the complement, it is the probability that the event does not occur. In this case, the complement would be 0.58.


If the probabilty that an event will happen is 3 what is the probability of the event complement?

The probability of event X is 0.3. If events X and Y are complements, what is the probability of event Y?


How often is the probability of the complement of an event less than the probability of the event itself?

It depends on the events. The answer is 0.5*(Total number of events - number of events with probability = 0.5) That is, discount all events such that their probability (and that of their complement) is exactly a half. Then half the remaining events will have probabilities that are greater than their complement's.

Related questions

What does it mean to find the compliment of the probability of an event?

The complement (not compliment) of the probability of event A is 1 minus the probability of A: that is, it is the probability of A not happening or "not-A" happening.The complement (not compliment) of the probability of event A is 1 minus the probability of A: that is, it is the probability of A not happening or "not-A" happening.The complement (not compliment) of the probability of event A is 1 minus the probability of A: that is, it is the probability of A not happening or "not-A" happening.The complement (not compliment) of the probability of event A is 1 minus the probability of A: that is, it is the probability of A not happening or "not-A" happening.


What does complement mean in probability?

The complement of an event occurring is that it does not occur.


What is the relationship between the probability of a simple event and its complement?

If the probability of an event is p, then the complementary probability is 1-p.


If the probability of an event is 0.42 then what is the probability of its component?

I haven't heard of a component with regards to statistics. If, by chance, you are referring to the complement, it is the probability that the event does not occur. In this case, the complement would be 0.58.


What is the complement of one third and it's probability?

"one third" is not an event and so cannot have complement nor a probability.


If the probabilty that an event will happen is 3 what is the probability of the event complement?

The probability of event X is 0.3. If events X and Y are complements, what is the probability of event Y?


When calculating the probability of a single trial experiment with a compound event why is it necessary to subtract?

It is not necessary. Sometimes, though, it is easier to find the probability of the complement and subtract that probability from 1.


How often is the probability of the complement of an event less than the probability of the event itself?

It depends on the events. The answer is 0.5*(Total number of events - number of events with probability = 0.5) That is, discount all events such that their probability (and that of their complement) is exactly a half. Then half the remaining events will have probabilities that are greater than their complement's.


If the probability that an event will happen is 0.03 what is the probability of the events complement?

0.97. Just take it away from 1


How do find the probability of A complement given B complement?

With the information that is available from the question, it is impossible.


How does one find the probability of A and B compliment?

Define your event as [A occurs and B does not occur] or as [A occurs and B' occurs] where B' is the complement of B. Equivalently, this is the event that [A and B' both occur].


How do you find experimental-probability?

To find the experimental probability of an event you carry out an experiment or trial a very large number of times. The experimental probability is the proportion of these in which the event occurs.