What does this R2 say about the overall model?

Learning Goal: I’m working on a business multi-part question and need an explanation and answer to help me learn.Part A. (39 Points)
By studying a country’s GDP growth rate we can learn how the overall economy of that country is performing
True— b. False —
Income inequality means:
Country’s total income is divided proportionately equally by all segments of its population
Income distribution is skewed in favor of a particular segment of the population
Richer people get more of the total income than poorer people
None of the above
Gini coefficient is a measure of income inequality
True —-; b. False —-
Gini coefficient can be derived from a
Lorenz Curve
A supply curve
A demand Curve
None of these
By estimating the GDP growth rate as a function of the Gini coefficient one can identify
If there is any causation between the Gini coefficient or income distribution and GDP growth
Which segment of the population becoming richer
How the GDP is distributed across population
None of the above
Pollution is always a problem for the U.S
True —–; False —–
One single most important measure of Air Pollution is Carbon Dioxide (CO2) that a country generates from its production processes
True —-; b. False —-
Global Warming is a Myth and verified by the facts that there are heavy rains and Snowfalls in many parts of the U.S.
True —–; b. False —
By focusing on a Kuznets Pollution Curve one gets a fairly good idea
The GDP and Pollution level across countries
Income inequality and distribution of income
Pollution and Income inequality over time
None of the above
There is a bias among the rich nations to dictate pollution control on the poorer nations
True. —–; b. False
There is no financial solution to World’s Pollution problems
True —-; b. False —-
Immigration is always good for any country because
It drains brain (“Brain Drain”) and takes away resources
It helps only the country where the people are immigrating from
It helps only the country where people are immigrating to
None of the above
Immigration adds to the current labor force, hence reduces the Wage rate in the receiving country
True —-; b. False —-
(30 points)
Below is an Estimated Regression equation. Answer the questions based on this estimated Regression equation. Show your WorkFirst the Equation below has been estimated with World Bank data for 190 Countries:Y = A0 + A1Gini + A2 CO2 + A3 Immi + A4 ADLit + eNow the Estimated Values of the parameters and their T-StatsY = 1.23 – 0.33 Gini + .12 CO2 + 0.19 Immi + 0.7 ADLitThe T-stats are for : A1 = 2.20; P-value: 0.002; A2 = – 1.75 ; P-Value: 0.45; A3 = 2.98; P-Value: 0.009 and A4= 2.21; P-Value: 0.08. R2 value is 0.89; N (sample size is 190); T- table value for 185 degrees of freedom and 95% level of significance is 1.96.
Estimate the gdp growth rate for any country whose Gini is 0.52; CO2 is 11 (unit is million tons) and Immigration is 13 (unit is in hundred thousand, and ADlit is 0.78.
Test the hypothesis that neither Gini, nor pollution affect the GDP growth rate
Test the hypothesis that ADlit affects GDP growth rate positively
What doe this R2 say about the overall model?
(16 points)
Illustrate the following with your own examples:
Kuznet’s Pollution curve
Climate Change
Requirements: The best

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