The tourist bureau of the Caribbean Islands surveyed a sample of 6 United States tourists as they left to return home . The tourists were asked how many days they spent on their visits . Their responses were as follows . 7, 8, 9, 4, 12, 8 Send data to calculator Find the standard deviation of this sample of numbers . Round your answer to two decimal places .

Find the standard deviation of this sample of numbers. Round your answer to two decimal places.