The manager of a warehouse monitors the volume of shipments made by the delivery team. The automated tracking system tracks every package as it moves through the facility. Based on current contracts with customers, the weights should have u = 22 lbs. and o = 5 Its. A sample of 25 packages is selected and weighed every day. Suppose the manager is analyzing data of daily averages for a period of 1013 days. 1Il'ilhat is the approximate standard deviation ofthese data? A. 5 El. 1 C. 0.5 D. 0.25