8.32 Each day a manufacturing plant receives a large shipment of drums of Chemical ZX-900. These drums are supposed to have a mean ll of 50 gallons, while the lls have a standard deviation known to be .6 gallon. a Suppose that the mean ll for the shipment is actually 50 gallons. If we draw a random sample of 100 drums from the shipment, what is the probability that the average ll for the 100 drums is between 49.88 gallons and 50.12 gallons? b The plant manager is worried that the drums of Chemical ZX-900 are underlled. Because of this, she decides to draw a sample of 100 drums from each daily shipment and will reject the shipment (send it back to the supplier) if the average ll for the 100 drums is less than 49.85 gallons. Suppose that a shipment that actually has a mean ll of 50 gallons is received. What is the probability that this shipment will be rejected and sent back to the supplier