The weekly demand for a product is 770 units. The standard deviation of daily demand is 10 units. The firm reviews its inventory every 28 days. Each order for the product arrives 9 days after placement. At the time of review, there are 10 units backorder. If 95 percent of all demand is to be satisfied from items in stock: How many days would be the lead time? (Whole number, no space, no decimal value)

Practical Management Science
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ISBN:9781337406659
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Chapter2: Introduction To Spreadsheet Modeling
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The weekly demand for a product is 770 units. The standard deviation of daily demand is 10 units. The firm reviews its inventory every 28 days. Each order for the product arrives 9 days after placement. At the time of review, there are 10 units backorder. If 95 percent of all demand is to be satisfied from items in stock:

How many days would be the lead time? (Whole number, no space, no decimal value) 

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