The fauces connects which of the following structures to the oropharynx? a. nasopharynx b. laryngopharynx c. nasal cavity d. oral cavity
section 12 section 14 ds 412 Model : Probabilistic – Fixed-order quantity – Economic order quantity Assumptions: Demand for the product is not constant and varies throughout the period. Safety stock must be kept: At a point that provides some customer service (i.e. 95% of demand will be met) Minimize the cost of shortage and the cost of carrying inventory Shortage is allowed. Stock-out occurs during lead time. Lead time is constant. Model : Probabilistic – Fixed-order quantity – Economic order quantity R= re-order point µ = Average usage during lead time = đ = Average daily demand L = Lead time in days β = Buffer or safety stock in units = a = Number of standard deviations needed for a specific confidence level σµ = Standard deviation of usage during lead time = σd = Standard deviation of daily demand
