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Mathematics, 10.10.2019 03:00 Isaacochoa780
At burnt mesa pueblo, archaeological studies have used the method of tree-ring dating in an effort to determine when prehistoric people lived in the pueblo. wood from several excavations gave a mean of (year) 1234 with a standard deviation of 31 years. the distribution of dates was more or less mound-shaped and symmetric about the mean. use the empirical rule to estimate the following. (a) a range of years centered about the mean in which about 68% of the data (tree-ring dates) will be found between and a. d. (b) a range of years centered about the mean in which about 95% of the data (tree-ring dates) will be found between and a. d. (c) a range of years centered about the mean in which almost all the data (tree-ring dates) will be found between and a. d.
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