Use the given degree of confidence and sample data to construct a confidence interval for the population mean . Assume that the population has a normal distribution. The amounts (in ounces) of juice in eight randomly selected juice bottles are: 15.2 15.7 15.9 15.9 15.1 15.5 15.7 15.3 Construct a 98% confidence interval for the mean amount of juice in all such bottles.