Examlex
An example of a portal that focuses on a narrow range of information and services and appeals to visitors with specific interests is ____.
Proportion
A statistical measure that indicates the fraction of the total number of items in a certain category or characteristic.
Two-tail Test
A statistical test that is used to determine if there is a significant difference between a sample and a particular population mean, where the critical region is split between both tails of the distribution.
Population Proportion
A measure that describes the percentage of a specific characteristic in a population.
Z-test
An analysis technique that evaluates the difference in means between two populations with known variances and substantial sample sizes.
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