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Probability of 0 is impossible, and 1 is certain. So, probability must be between 0 and 1, inclusive.

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Q: Why the probability can never be 1 or less than 0?
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Why cannot a probability not be less than 0?

0 means there is no chance of something happening. You cannot have less than no chance of something happening. So a probability cannot be less than 0.


When probability is less then 0 what happen?

Probability can not be less than 0 or greater than 1. A probability of 0 means there is no possibility whatsoever of an event occurring. A probability of 1 means that the event is guaranteed to occur no matter what.


Can a probability be more than 1 or less than 0?

No. A probability of 1 means something will definitely happen. There cannot be a greater certainty than that, so probability cannot be greater than 1. 0 means there is no chance of something happening. You cannot have less than no chance of something happening. So a probability cannot be less than 0.


Can the value of probability be less than zero?

No. Probability must be between 0 and 1.


Can probability be less than 0?

No, it must be a number in the interval [0, 1].


Can the probability be more than 1 or less than 0?

No, all probabilities are given from a scale of 0 to 1. 0 represents 0% and 1 represents a 100% probability.


Are the probability values always greater than or equal to 0 or less than or equal to 1 or all positive numbers?

Probability values are never negative and are always between 0-1 according to the definition Probability of A= Number of outcomes classified as A/Total number of possible outcomes


Why probability always lays 0 to 1?

0 represents that is will never happen. It means that there is no probability that it will happen. 1 represents that is is certain to happen. You cannot be more certain than definitely certain, and something cannot be less probable than not at all.


What can a probability number be larger than?

Larger or equal to 0 but less than or equal to 1


Can the probability of paternity be 0 percent?

If you have a sperm amount less than 3 ml the probability decreases. No, sorry to say but all it takes is one sperm. On the other hand when testing for paternity the test is never 0, it can be close to it but never zero, due to the + or - error in the mathematical formula used.


Which is not a possible vaule for a probability?

Probability value can only be real number between 0 to 1, therefore, it cannot be greater than 1 or less than 0 or a complex number.


Given a standardized normal distribution with a mean of 0 and a deviation of 1 what is the probability that Z is less than 1.51?

From the related link, you can read directly the probability that Z is less than 1.51 is 0.9345.