Energy consumption is claimed to be a good predictor of Gross National Product. An economist recorded the energy consumption ( ) x and the Gross National Product ( ) y for eight countries. The data are shown in the table below: Energy Consumption ( ) x 3.4 7.7 12.0 75 58 67 113 131 Gross National Product ( ) y 55 240 390 1100 1390 1330 1400 1900 iv. Determine at the 5% level of significance whether there is evidence to indicate a linear relationship between energy consumption, x , and Gross National Product, y . v. Find a 95% confidence interval for 1 β vi. Find the correlation coefficient, r .
QUESTION THREE
Energy consumption is claimed to be a good predictor of Gross National Product. An economist recorded the energy consumption ( ) x and the Gross National Product ( ) y for eight countries. The data are shown in the table below:
Energy Consumption ( ) x 3.4 7.7 12.0 75 58 67 113 131
Gross National Product ( ) y 55 240 390 1100 1390 1330 1400 1900
iv.
Determine at the 5% level of significance whether there is evidence to indicate a linear relationship between energy consumption, x , and Gross National Product, y .
v.
Find a 95% confidence interval for 1 β
vi.
Find the
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