An automatic machine in a manufacturing process is operating
     An automatic machine in a manufacturing process is operating properly if the lengths of an important subcomponent are normally distributed with a mean of 114 cm and a standard deviation of 4.8 cm.  Using Excel, find the probability that one selected subcomponent is longer than 116 cm.  Probability = Using Excel, find the probability that if 4 subcomponents are randomly selected, their mean length exceeds 116 cm.  Probability = 
  
  Solution

