Afalling object travels a distance given by the formula d=2t+6t^2, where d is measured in feet and t is measured in seconds. how many seconds will it take for the object to travel 60 feet? round the answer to 4 decimal places. explain

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?