Assume that the population has a normal distribution. A laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 185 milligrams with s = 17.6 milligrams. Construct a 95%...

Assume that the population has a normal distribution.  A laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 185 milligrams withs= 17.6 milligrams.  Construct a 95% confidence interval for the true mean cholesterol content of all such eggs.