Approximately what proportion of normally distributed data are between observations 1 standard deviation less than the mean and two standard deviations above the mean? (Hint: draw a picture. It will help.) Enter your answer here If you would like, you may type an explanation to show your work or upload an image of your work (it must legible). This is optional but may help you earn partial credit for an incorrect answer. Please select file(s) Select file(s)