Question

Select the definition of the statistical variable a (alpha).

-The probability of determining two groups of data are different from each other when they are actually the same.
-The probability that two groups of data are significantly different from each other.
-A probability of 95%.
-Equivalent to the standard deviation.

Answer 1

The statistical variable alpha (a) is related to the confidence level and represents the probability that the confidence interval does not contain the unknown population parameter.

Step-by-step explanation:

The statistical variable alpha (a) is related to the confidence level and represents the probability that the confidence interval does not contain the unknown population parameter. It is commonly denoted as a and is usually set at a specific value, such as 0.05 or 0.01.