One item a computer store sels is supplied by a vendor who handles only that item Demand for that item recently changed, and the store manager must determine when to replenish it. The manager wants a probability of at least 96 percent of not having a stockout during lead time. The manager expects demand to average a dozen units a day and have a standard deviation of two units a day. Lead time is variable, averaging four days with a standard deviation of one day, Assume normally and that seasonality is not a factor Use The a. When should the manager reorder to achieve the desired probability (Round your intermediate calculations and final answer to 2 decimal places.) ROR 1. Which of the following assumptions would be violated it seasonality were present? Demand and lead time independence Constant demand Constant lead time