The Goliath Tool Company produces slip-ring bearings, which look like flat doughnuts or washers. They fit around shafts or rods, such as drive shafts in machinery or motors. At anearly stage in the production process for a particular slip-ring bearing, the outside diameter of the bearing is measured. Employees have taken 2 samples (during a 2-day period) of 5 slipring bearings and measured the diameter of the bearings. The individual observations from each sample (or subgroup) are shown: Observations(Slip-Ring Diameter, cm) n Sample k 4 5 1 5.02 5.01 4.94 4.99 4.96 5.01 5.03 5.07 4.95 4.96 d) Calculate mean e) Calculate standard deviation (uncertainty) f) What is the predicted range of diameter based on 68% confidence level?