Sat scores: according to the college board website, 1,672,395 students from the class of 2014 took the sat, a globally recognized college admissions test. the mean mathematics score was 513 with a standard deviation of 120.

source: sat college board 2014 college bound seniors total group profile report (2014). college board.

true or false? the mean mathematics score of 513 is a statistic, representing the mean score for the sample of 1,672,395 students.

i put false since it might be a parameter? i really can't tell.

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?