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4. A plant manager at Erie Associates knows that the number of boxes of supplies received weekly is normally distributed with a mean of 200
4. A plant manager at Erie Associates knows that the number of boxes of supplies received weekly is normally distributed with a mean of 200 and a standard deviation of 20. A. What percentage of the time will the number of boxes received in a week exceed 210? B. What percentage of the time will between 180 and 210 boxes of supplies arrive in a week
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