Wood from excavation gave a mean of year 1234 with a standard deviation of 32 years. The distribution of dates was more or less mound shaped and symmetric about the mean. Estimate the following A) a range of years centered about the mean in which about 68% of the data will be found between _____ and ____ A.D. B) a range of years centered about the mean in which 95% of the data will be found between ____ and _____ A.D. c) a range of years centered about the mean in which all the data will be found between ___ and ____ A.D