Based on experience, the Ball Corporation's aluminum can manufacturing facility in Ft. Atkinson, Wisconsin, knows that the

Question:

Based on experience, the Ball Corporation's aluminum can manufacturing facility in Ft. Atkinson, Wisconsin, knows that the metal thickness of incoming shipments has a mean of 0.2731 mm with a standard deviation of 0.000959 mm.
(a) A certain shipment has a diameter of 0.2761. Find the standardized z-score for this shipment.
(b) Is this an outlier?