Sarah and her family are on vacation in the mountains. they camp at am elevation of 1,000 feet. after. setting up the tent, they hike up to 1,310 feet and then return to the tent. what is their change i'm elevation? need

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?