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The age structure of human populations in West Africa and Western Europe, as of 2000.
Much time and effort occurs between the development of a research idea and the statistical analysis
SpaceShipOne completed the first manned private spaceflight in 2004, reaching an altitude of 100.124
A Schematic Description of the Experiment by Maviel et al. (2004)
Cross-sectional data showing that the amount of effort spent on personal health care increases with
In 2000, the average charge of tax preparation was 95 . Assuming a normal distribution and a ...