3 Generate the mean standard deviation and 2 standard deviation range for both the full data set and your own sample of 25 pennies Also calculate the 95 confidence interval How do the standard deviations compare to the 95 Cls Sample mean 2 697 Sample standard deviation 0 28 rounded up to 0 3 95 CI 0 123 2 697 95 CI 2 57 2 82 Population mean 2 778 Population standard deviation 0 029 rounded up to 0 3