the standard deviation is = $

Multiply each item by 3 , and compute the mean and standard deviation of the new sample. Consider the following sample. 31,36,35,38,40,41,57 The mean is $ (Round to the nearest cent as needed.) The standard deviation is $ (Round to the nearest cent as needed.) Multiply each item by 3 , and compute the mean and standard deviation of the new sample. Consider the following sample. 31,36,35,38,40,41,57 The mean is $ (Round to the nearest cent as needed.) The standard deviation is $ (Round to the nearest cent as needed.)