Alpha can produce either 18 tons of oranges or 9 tons of apples in a year, while Omega can produce either 16 tons of oranges or 4 tons of apples. The opportunity costs of producing 1 ton of apples for Alpha and Omega, respectively, are:
a. 0.25 tons of oranges; 0.5 tons of oranges.
b. 9 tons of oranges; 4 tons of oranges

Which of the following would NOT cause the IS curve to shift to the left?

A) a decrease in government purchases B) an increase in consumer confidence C) a decrease in foreign demand for domestic products D) a decrease in the expected future profitability of capital

Which of the following is true of Regression Specification Error Test (RESET)?

A. It tests if the functional form of a regression model is misspecified. B. It detects the presence of dummy variables in a regression model. C. It helps in the detection of heteroskedasticity when the functional form of the model is correctly specified. D. It helps in the detection of multicollinearity among the independent variables in a regression model.