Question 19 of 20 (1 point) | Question Attempt: 1 of Unlimited - 10 12 13 14 The tourist bureau of the Hawaiian Islands surveyed a sample of 6 United States tourists as they left to return home. The tour ow many days they spent on their visits. Their responses were as follows. 7, 8, 9, 6, 12, 12 Send data to calculator Find the standard deviation of this sample of numbers. Round your answer to two decimal places. (If necessary, consult a list of formulas.) X 5