Weekly demand for dumplings at Jane’s restaurant is normally distributed with a mean of 2825 and a standard deviation of

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Weekly demand for dumplings at Jane’s restaurant is normally
distributed with a mean of 2825 and a standard deviation of 425.
The restaurant manager continuously monitors inventory, and the
current replenishment policy is to order 500 dumplings each time
the inventory drops to 6000 dumplings. The supplier currently takes
two weeks to deliver an order (i.e., the lead time for Jane’s
restaurant is two weeks). Under the current policy, how much safety
inventory does the restaurant carry? Round to the nearest 10’s if
needed because each pack has 10 dumplings.
Group of answer choices
300
420
350
560
470