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Yes. It is a certain event. If a coin is tossed, a 'head or tail would roll' is a certain event and has probability 1.

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Q: An event that must occur has 1 for probability?
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Related questions

What is the probability of an event occurring to the probability that it will not occur?

The probability that an event will occur plus the probability that it will not occur equals 1.


What compares the probability of an event occurring to the probability that it will not occur?

If the probability of an event occurring is p, then 1-p represents the probability of the same event not occurring. The value of p must lie between 0 and 1.


Probability of an impossible event is?

an impossible event has a probability of 0, it will never occur a certain event has a probability of 1, it will always occur


Probability of an event occurring to the probability that it won't occur?

These events are complementary. Let P(A) = probability event will occur. Then the probability it will not occur is: 1 - P(A).


What do you mean by probability?

Probability is a measure of the expectation that an event will occur or a statement is true. Probabilities are given a value between 0 (will not occur) and 1 (will occur).[1] The higher the probability of an event, the more certain we are that the event will occur.


What is the probability that an event will definitely occur?

If the event will definitely occur, then its probability is 1.Not asked, but answered for completeness sake - if the event will definitely not occur, then its probability is 0. All probabilities lie between 0 and 1, inclusive.


The chance that a given event will occur usually expressed between the number 0 and 1?

The chance that a given event will occur is typically expressed as a probability, which is a number between 0 and 1. A probability of 0 means the event will not occur, while a probability of 1 means the event will definitely occur. Probabilities between 0 and 1 give us the likelihood of the event happening.


What is the likelihood a certain event will occur?

Its probability. The probability for a certainty is 1.


If the probability that an event will occur is 1 then the event is certain to occur?

Yes, the probabilty scale is from one to zero so is the probability is 0 it will definitely not occur


What is the probability of an event occurring to the probability that will not occur?

If the event in question is A and the probability of A occurring is P(A), then the probability of A not occurring is P(A')=1-P(A).


What type of event is Theoretical probability of 1?

Theoretical probability of 1 refers to an event that is certain to happen. It has a probability of 1 because it is guaranteed to occur.


What does the probability of 1 mean?

The event will 100% occur.