You want to investigate the effect of GDP per capita (measured in thousands of dollars) on...

 

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You want to investigate the effect of GDP per capita (measured in thousands of dollars) on Life Expectancy (measured in years) and you decide to use a quadratic model. You estimate using data for a large number of countries and obtain the following results: 2 LifeExpectancy = 62 +21,600GDPpc - 180GDPpc According to your estimated relationship, the marginal effect of GDP per capita on Life Expectancy is (positive/negative/constant) up to a GDP per capita of thousands of dollars (use an integer number in your answer), after which it becomes (positive/negative/constant). Note: in the first and last blank, choose only one of the options and make sure to use the correct spelling. You want to investigate the effect of GDP per capita (measured in thousands of dollars) on Life Expectancy (measured in years) and you decide to use a quadratic model. You estimate using data for a large number of countries and obtain the following results: 2 LifeExpectancy = 62 +21,600GDPpc - 180GDPpc According to your estimated relationship, the marginal effect of GDP per capita on Life Expectancy is (positive/negative/constant) up to a GDP per capita of thousands of dollars (use an integer number in your answer), after which it becomes (positive/negative/constant). Note: in the first and last blank, choose only one of the options and make sure to use the correct spelling.

Answer rating: 100% (QA)

The estimated equation given for the relationship between Life Expectancy and ... View the full answer