Construct a 90 percent confidence interval given the information below: The amount of fluid in a half-liter (500 ml) bottle of diet cola is normally distributed but the population mean is not known. To develop an estimate of the mean, a sample of 27 bottles reveals a sample mean weight of 502.1 ml with a sample standard deviation of 1.20 ml. Construct and interpret a 90 percent confidence interval for the mean of the population of half-liter diet cola bottles.