Examlex
Deaths from ozone pollution could increase by 2050.
Null Hypothesis
A statement or hypothesis that assumes no statistical significance or effect exists in a set of observations or experiment.
Two-Tailed Test
A hypothesis test in which the critical area for a rejection of the null hypothesis is in both tails of the probability distribution, allowing for testing of deviations in both directions.
Population Mean
The average of all the values in a population, representing the central tendency of the total population.
Type II Error
The failure to reject a false null hypothesis or a false negative in hypothesis testing.
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