In: Operations Management
It is your responsibility, as the new head of the automotive
section of Nichols Department Store, to ensure that reorder
quantities for the various items have been correctly established.
You decide to test one item and choose Michelin tires, XW size 185
× 14 BSW. A perpetual inventory system has been used, so you
examine this as well as other records and come up with the
following data:
Cost per tire | $ | 35 | each |
Holding cost | 20 | percent of tire cost per year | |
Demand | 1,000 | per year | |
Ordering cost | $ | 20 | per order |
Standard deviation of daily demand | 3 | tires | |
Delivery lead time | 4 | days | |
Because customers generally do not wait for tires but go elsewhere,
you decide on a service probability of 98 percent. Assume the
demand occurs 365 days per year.
a. Determine the order quantity. (Round
your answer to the nearest whole number.)
b. Determine the reorder point. (Use
Excel's NORM.S.INV() function to find the z value. Round z value to
2 decimal places and final answer to the nearest whole
number.)