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There is no standard. Often the 5% or 1-in-20 rule is used but it really depends on the risk of error. If the consequences of making the wrong decision are great then a 1% or even smaller value may be used. - for example, in medical research.

Q: What is the standard used by statistics to determine the probability of an event occurring outside of chance alone?

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For a single random choice from a standard deck, the probability is 1/13.For a single random choice from a standard deck, the probability is 1/13.For a single random choice from a standard deck, the probability is 1/13.For a single random choice from a standard deck, the probability is 1/13.

The probability is 0.The probability is 0.The probability is 0.The probability is 0.

With one standard die, the probability is one in six.

The probability of getting an 8 on a standard six-sided die is zero.

with mean and standard deviation . Once standardized, , the test statistic follows Standard Normal Probability Distribution.

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The normal distribution, also known as the Gaussian distribution, has a familiar "bell curve" shape and approximates many different naturally occurring distributions over real numbers.

For a single random choice from a standard deck, the probability is 1/13.For a single random choice from a standard deck, the probability is 1/13.For a single random choice from a standard deck, the probability is 1/13.For a single random choice from a standard deck, the probability is 1/13.

It is impossible to answer the question because "the following" did not follow.

The probability is 0.The probability is 0.The probability is 0.The probability is 0.

The probability is 0.25

With one standard die, the probability is one in six.

I apologize my question should have read what are the characteristics of a standard normal probability distribution? Thank you

with mean and standard deviation . Once standardized, , the test statistic follows Standard Normal Probability Distribution.

The probability of getting an 8 on a standard six-sided die is zero.

Standard DEVIATION

It is 7/8.

The probability of rolling a seven with one roll of a standard number cube is zero.