ABC Electronics stocks a certain switch connector at its

central warehouse for supplying Natural gas fields service

offices. The yearly demand for these connectors is

$200,000$ units. The company estimates its annual holding

cost for this item to be L$.$E$.250$ per unit. The cost to place

and process an order from the supplier is L$.$E$.65.$ The

company operates $300$ days per year, and the lead time to

receive an order from the supplier is $30$ working days.

a$)$Find the economic order quantity.

b$)$Find the annual holding costs.

c$)$ Find the annual ordering costs.

d$)$What is the reorder point?

Recalculate the previous results if the warehouse manager

of the company decides to consider a $5\%$ risk level of stockout $($assume a suitable value of sigma$)$