Indicate how each of the following would shift the
(1) marginal cost curve,
(2) average- variable cost curve,
(3) average fixed cost curve, and
(4) average- total cost curve of a manufacturing firm. In each case specify the direction of the shift.
A reduction in business property taxes
An increase in the nominal wages of production workers.
A decrease in the price of electricity.
An increase in insurance rates on plant and equipment.
An increase in transportation costs.