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Suppose that Tonga, a small country, imports apples at the world price of $4 per kilogram.If Tonga imposes a tariff of $1 per kilogram on imported apples, the price of apples in Tonga will increase, but by less than $1, ceteris paribus.
T Test
A statistical analysis method that compares the average values of two groups to ascertain if their differences are statistically significant.
Groups
Collections of subjects or items that are studied in an experiment, often differentiated by characteristics or treatment conditions.
Pooled Variance
A weighted average of variances from multiple samples, often used in statistical procedures to estimate a common variance.
Test Statistic
A value calculated from sample data during a hypothesis test that is used to determine whether to reject the null hypothesis.
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