I understand how to work the problem except for figuring out the z-score. Could you please...

I understand how to work the problem except for figuring out the z-score. Could you please explain how to find the z-score for the following problem?

The demand during the lead time is normally distributed with a mean of 40 and a standard deviation of 4. if the company wishes to maintain a 90 percent service level, how much safety stock should be held?

Mean = 40, s= 4 x= safety stock

Expert Solution

z-score = 1.28

orchestra answered 1 year ago

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