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Shipment Times. A survey of 36 selected recording companies showed these numbers of days that it took to receive a shipment from the day it

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Shipment Times. A survey of 36 selected recording companies showed these numbers of days that it took to receive a shipment from the day it was ordered. Days Frequency 1-3 6 4-6 8 7-9 10 10-12 7 13-15 0 16-18 5 Find each of these: a. Variance b. Standard Deviation c. Quartile d. Percentile

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