Question: please help 9- the daily demand for a product obeys a normal behavior with a mean of 60 units and a standard deviation of 10

please help

9- the daily demand for a product obeys a normal behavior with a mean of 60 units and a standard deviation of 10 units. The cost per order is $ 12, the cost to hold the inventory is $ 0.60. We consider 365 days of the year and work at a 95% satisfaction level (Z = 1.64). Also, the delivery time is known to be 5 days. What is the safety inventory? a) 936 b) 300 c) 17 d) 317 10-What is the optimal order quantity? a) 17 b) 936 c) 300 d) 317 12- At what point should a new order be placed? a) 317 b) 17 c) 300 d) 936

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