The weights of chocolate candies produced by a machine do not vary much from piece to piece (standard deviation= 1.23 grams). A random sample of 120...

The weights of chocolate candies produced by a machine do not vary much from piece to piece (standard deviation= 1.23 grams). A random sample of 120 candies had a mean weight of 14.75 grams. Find a 95% confidence interval for the mean weight of one of these candies.