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The school nurse uses a chart to demonstrate that,according to statistics from the Centers for Disease Control and Prevention (CDC) ,the population with the greatest incidence of human immunodeficiency viral (HIV) infection in the United States is:
Equal-variances T-test
A statistical method that compares the average values of two groups, under the assumption that both groups have equal variances.
Normal Populations
Populations in which the underlying distribution of the data follows a normal distribution, characterized by a symmetric bell-shaped curve.
Independent Samples
Samples in which the selection or occurrence of one does not affect the selection or occurrence of the other.
Two-tailed Hypothesis Test
A statistical test used to determine if there is a significant difference between the means or proportions of two populations in either direction.
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