John is trying to decide whether to expand his business or not. If he continues his business as it is, with no expansion, there is a 50 percent chance he will earn $100,000 and a 50 percent chance he will earn $300,000. If he does expand, there is a 30 percent chance he will earn $100,000, a 30 percent chance he will earn $300,000 and a 40 percent chance he will earn $500,000. It will cost him $150,000 to expand. The expected value of John's earnings if he chooses to expand is:
A. $320,000
B. $230,000
C. $900,000
D. $140,000
A. $320,000
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Refer to Table 1-2. Using marginal analysis, how many hours should Julius extend his shop's hours of operations?
A) 2 hours B) 3 hours C) 4 hours D) 5 hours E) 6 hours
A World Bank study suggest a strong link in Africa between governments that __________ special-interest groups and __________ rates of economic growth
a. cater to, high b. cater to, moderate c. cater to, low d. ignore, low e. ignore, moderate
Which of the following sequences results from a decrease in the price level?
a. the money demand curve shifts leftward, the interest rate decreases, investment spending and autonomous consumption increase, the aggregate expenditure line shifts upward, and there is a rightward movement along the aggregate demand curve. b. the money demand curve shifts rightward, the interest rate increases, investment spending and autonomous consumption increase, the aggregate expenditure line shifts downward, and there is a rightward movement along the aggregate demand curve. c. the money demand curve shifts leftward, the interest rate decreases, investment spending and autonomous consumption increase, the aggregate expenditure line shifts upward, and there is a leftward movement along the aggregate demand curve. d. the money demand curve shifts rightward, the interest rate decreases, investment spending and autonomous consumption increase, the aggregate expenditure line shifts upward, and there is a movement upward along the aggregate demand curve. e. the money demand curve shifts leftward, the interest rate increases, investment spending and autonomous consumption increase, the aggregate expenditure line shifts upward, and there is a leftward movement along the aggregate demand curve.
Suppose that many coal mines are shut for environmental reasons. This will cause
A) no change in the supply curve, only a change in price. B) a movement up the supply curve. C) a decrease in the supply of coal (a leftward shift of the supply curve). D) an increase in the supply of coal (a rightward shift of the supply curve). E) a movement down the supply curve.