(7,7,8,5,8,7,8,12,8,6,6,7,6,4,4,8,6,5,5,9,9,9,5,8,8) a. Find the mean and standard deviation of your rolls (round to one decimal). = 7 b. What percentage of the data is within 1 standard deviation of the mean? c. What percentage of the data is within 2 standard deviations of the mean