The formula for the standard deviation of a sample is S 1 11 n 1 1 X X Select the true statement for the following data set that has a mean of 9 3 7 8 8 8 9 10 10 13 14 Answer choices are rounded to the hundredths place O O The variance is 8 50 and the standard deviation is 3 09 The variance is 9 56 and the standard deviation is 8 50 The variance is 3 09 and the standard deviation is 9 56 The variance is 9 56 and the standard deviation is 3 09