Tammi’s Truck Stop sells Seat-o-Nails cushions, which are
specially designed to keep drivers awake on the road. Her
accessories supplier makes deliveries every Tuesday, at which times
she can get as many cushions as she wants (the supplier always has
extras in his truck). Tammi, who was a statistics major in college,
has done some calculations and estimates that weekly demand for
cushions is normally distributed with mean 35 and standard
deviation 10. The cushions cost her $40 wholesale and she sells
them for $75. Tammi uses a 30 percent interest rate to evaluate the
cost of holding inventory. It is Tuesday and she has 12 cushions in
stock. The supplier has just arrived.
How many cushions should Tammi buy if sales are lost when she runs
out of stock during the week?
Tammi’s Truck Stop sells Seat-o-Nails cushions, which are specially designed to keep drivers awake on the...