Random samples were selected from three populations. The data obtained are shown below. Please note that the sample sizes are not equal.
a.Compute the overall mean.
b.At 95% confidence, test to see if there is a significant difference among the means.
Definitions:
NX
Stands for Net Exports, which is the difference between a country's total value of exports and total value of imports.
Equations
Mathematical statements that assert the equality of two expressions, often used in modeling relationships in various sciences.
Real Return
The return on an investment after adjusting for inflation, reflecting the actual purchasing power of the amount returned.
Net Capital Outflow
The skew in investment patterns between domestic entities investing abroad and foreign entities investing domestically.
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