25. Calculation Question: Weekly demand for corn tortillas at Big Truck Tacos is normally distributed with a mean (average) of 1500 and a standard deviation of 300. Marco's takes 1.5 weeks to supply a Big Truck order. Big Truck is targeting a service level of 95 percent (Z=1.65) and monitors its inventory continuously (Q,R policy is adopted). How much safety inventory of corn tortillas should Big Truck carry? What should their record level R be?