In the first half of a football game, a running back gained an average of 12.1 yards per carry against the opposing team on a total of 8 runs. In the second half of the game, the same running back had a ner loss of 16.5 yards. How many total yards did the running back gain during the game?

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?