Treering dates were used extensively in arehaeological studi
Tree-ring dates were used extensively in arehaeological studies at Burnt Mesa Pueblo. At one site on the mesa, tree-ring dates (for many samples) gave a mean date of mu_1 = year 1251 with standard deviation sigma_1 = 37 years. At a second, removed site, the tree ring dates gave a mean of mu_2 = year 1112 with standard deviation sigma_2 = 35 years. Assume that both sites had dates that were approximately normally distributed. In the first area, an object was found and dated as x_1 = year 1211. In the second area, another object was found and dated as x_2 = year 1241. Convert both x_1 and x_2 to z values, and locate both of these values under the standard normal curve of the figure above. (Round your answers to two decimal places.) Which of these two items is the more unusual as an arehaeological find In its location?
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