Selection bias is unique to the field of economic research.

For this question, assume that the Phillips curve equation is represented by the following equation: ?t - ?t-1 = (m + z) - ?ut. Given this information, the natural rate of unemployment will be equal to

A) m + z. B) (m + z - ?). C) ?(m + z). D) 0. E) none of the above

Although regulation and corrective taxes are both capable of reducing pollution, regulation accomplishes this goal more efficiently

a. True b. False Indicate whether the statement is true or false