Authentic Thai rattan chairs are delivered to Gary Schwartz's chain of retail stores, called The Kathmandu Shop, twice a

[answerhappygod]

Authentic Thai rattan chairs are delivered to Gary Schwartz's
chain of retail stores, called The Kathmandu Shop, twice a year.
The reorder point, without safety stock, is 250 chairs. Carrying
cost is $3 per unit per year, and the cost of a stockout is $15 per
chair per year.
Given the following demand probabilities during the lead time,
how much safety stock should be carried?
Demand During Lead Time
Probability
100
0.1
200
0.2
300
0.4
400
0.2
500
0.1