Some one determine the sum: (8x3y2 + 4xy2) + (2xy2 + 9x3). 23x8y6 8x3y2 + 6xy2 + 9x3 10x3y2 + 13xy2 12x4y4 + 11x4y2

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?