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To move up the income ladder and achieve high-income status, countries must
Confidence Intervals
A collection of values, obtained through sample analysis, which is thought to include the value of an undetermined population variable.
Test Statistics
A standardized value that is calculated from sample data during a hypothesis test and is used to determine whether to reject the null hypothesis.
Distributions
A statistical term describing all the possible values and their associated frequencies for a data set or variable.
Type II Error
A statistical error that occurs when a false null hypothesis is not rejected, meaning a true effect is missed.
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