Assume now that the amount of fill dispensed by the bottling
     Assume now that the amount of fill dispensed by the bottling machine is normally distributed with sigma = 2 ounces.  If n = 9 bottles arc randomly selected from the output of the machine, what is P(lY - mu|  . 3)?  Compare this with the answer obtained in Example 7. 2.  Find P(|Y - mu|  . 3) when Y is to be computed using samples of sizes n = 25, n = 36, n = 49, and n = 64.  What pattern do you observe among the values for P(|Y - mu|  . 3) that you observed for the various values of n?  How do the respective probabilities obtained in this problem (where sigma = 2) compare to those obtained in Exercise 7. 9 (where sigma = 1)? 
  
  Solution

