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XYZ Distribution Center Receives 1,000 Deliveries Each Day

Question 4

Multiple Choice

XYZ distribution center receives 1,000 deliveries each day.Arrivals are on time if they are within plus or minus 10 minutes of the targeted arrival.In order to have only 3.4 late or early arrivals per million deliveries,what would the standard deviation of arrival times need to be?


A) 3.33 minutes
B) 0.83 minutes
C) 1.67 minutes
D) 6.67 minutes

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