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Some politicians have recently suggested changing the income tax system in the U.S. to a flat tax system where all taxpayers would pay the same percentage of their income in tax to the federal government. Explain how such a change can be analyzed in terms of efficiency. Do you believe that this tax will have equity effects as well?
Null Hypothesis
A hypothesis that there is no effect or no difference, and it serves as a default hypothesis in statistical hypothesis testing.
Alternative Hypothesis
A statement that suggests there is a statistically significant difference between two or more data sets, contrary to the null hypothesis.
P-value
The likelihood of seeing a test statistic that is as extreme or more so than what was observed, assuming the null hypothesis is correct.
Sample Standard Deviation
A measure of variation or dispersion within a sample set of values, similar to standard deviation but specifically applied to samples rather than whole populations.
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