Using a specific method, your calculated density of aluminum is d1 = 2.75 g/cm3. Using a different method, your calculated density d2 = 2.67 g/cm3. Calculate the percentage difference between the two methods (TWO DECIMAL PLACES).

Use the given degree of confidence and sample data to construct a confidence interval for the population mean mu . 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 sequals 17.6 milligrams. a confidence interval of 173.8 mgless than muless than 196.2 mg is constructed for the true mean cholesterol content of all such eggs. it was assumed that the population has a normal distribution. what confidence level does this interval represent?