Sarkis is a sales manager for the bratney companies, a company that manufactures equipment used in the processing of grains and other produce. every year, sarkis must submit a request for the number of new sales representatives to be hired in the next year. sarkis's goal is clear—he must have enough sales reps to service all of bratney's customers—but it is often difficult to predict how many customers the company will have. sales are dependent on the economy, weather, farming trends, and a large number of other environmental factors. sarkis's decision about how many sales reps to hire is being made under conditions of , because: