The simple exponential smoothing forecast method is appropriate when

	demand has no observable level or seasonality.
	demand has observable trend and seasonality.
	demand has observable trend or seasonality.
	demand has no observable trend or seasonality.

The trade-off that an inventory manager must consider when planning safety inventory is

	increasing product availability (i.e., service level) versus decreasing inventory holding costs.
	increasing product availability (i.e., service level) versus increasing inventory holding costs.
	none of the above.
	decreasing product availability (i.e., service level) versus decreasing the level of safety inventory.
	increasing product availability (i.e., service level) versus raising the level of safety inventory.