please show work and answer question 6!

For Questions 1-4, use the following information: Weekly demand for iPhones at the Apple store is normally distributed with a mean of 120 and a standard deviation of 80. Foxconn, the assembler takes three weeks to supply an order from the Apple store. The store manager currently orders 500 phones when the inventory drops below 400. Question 6 18 pts Evaluate the CSL resulting from a policy of ordering 500 iPhones when there are 400 units in the inventory. Less than 60% % Between 80% and 85% Between 90 and 95% Between 60% and 65% O More than 95%