Examlex
Corrections consists of subunits, each with its own function and responsibilities. Some examples are probation offices, halfway houses, and prisons.
Z-statistic
A type of standard score that indicates how many standard deviations an element is from the mean of its distribution.
Z-test
A statistical test used to determine whether there is a significant difference between the mean of a sample and the population mean, assuming the distribution is normal.
µ = 22
Represents a population mean of 22 in statistical notation.
Null Hypothesis
A hypothesis that there is no effect or no difference, and it is the statement that researchers aim to test against.
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