Refer to Scenario 12.1. Suppose that a third friend, Ryan, joins Simon and Paula on their way home from school, and this reduces the probability of any particular individual from stepping forward to help the man being attacked from 70% to 60%

While producing on the production possibilities frontier, if additional units of a good could be produced at a constant opportunity cost, the production possibilities frontier would be

A) bowed outward. B) bowed inward. C) positively sloped. D) a straight line.

The amount of money that a bank must keep on hand per dollar of deposits is called

A) the discount rate. B) the quick ratio. C) the multiplier. D) the reserve requirement.