Use the following equation to find ∂z/∂x and ∂z/∂y. ((partial z)/(partial x))=-((partial F)/(partial x))/((partial F)/(partial z)) ((partial z)/(partial y))=-((partial F)/(partial y))/((partial F)/(partial z)) yz = ln(x + z)

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?