The most common social decision-making mechanism is majority rule.
Answer the following statement true (T) or false (F)
True
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Signals can help prevent adverse selection as long as a false signal is costly to the person sending it
Indicate whether the statement is true or false
When you have an omitted variable problem, the assumption that E(ui Xi) = 0 is violated. This implies that
A) the sum of the residuals is no longer zero. B) there is another estimator called weighted least squares, which is BLUE. C) the sum of the residuals times any of the explanatory variables is no longer zero. D) the OLS estimator is no longer consistent.
Which of the following is not a component of the aggregate demand curve?
a. Consumption (C). b. Investment (I). c. Government spending (G). d. Net exports (X-M). e. All of these are components.
Which of the following reasons offered for why crime fell in the 1990s does the Brennan Center suggest had no impact?
A. Higher rates of incarceration B. The increase in the number of police C. The increased use of community policing D. Longer effective sentences