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Which is the least effective method of improving U.S.air pollution laws?
T Distribution
A probability distribution that emerges in the context of estimating the mean for a normally distributed population, applicable when dealing with a small sample size and the population standard deviation is not known.
Degrees of Freedom
The number of independent pieces of information available to estimate another parameter or the number of values in the final calculation of a statistic that are free to vary.
Interval Estimation
A range within which a population parameter is estimated to lie, based on sample data and a certain level of confidence.
Standard Deviation
The statistic that measures the dispersion of a dataset relative to its mean and is calculated as the square root of the variance.
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